Baking mold medium and frame laser welding device

Abstract

This utility model belongs to the field of baking mold manufacturing technology, and particularly relates to a laser welding device for the middle and frame of a baking mold. It includes a rectangular placement platform, a first positioning plate on the front side of the platform, and a second positioning plate on the left side of the platform. On the opposite side of the first positioning plate are several first pressing blocks that can move closer to or further away from the first positioning plate. These first pressing blocks are spaced apart in the left-right direction, with at least one first pressing block on the left having a greater movable distance than one on the right. On the opposite side of the second positioning plate are several second pressing blocks that can move closer to or further away from the second positioning plate. These second pressing blocks are spaced apart in the front-back direction, with at least one second pressing block on the front having a greater movable distance than one on the back. This utility model has the advantage of being able to weld the middle and frame of baking molds of various specifications.

Description

Technical Field

[0001] The utility model belongs to the technical field of baking mold manufacturing, and in particular relates to a laser welding device for a baking mold middle and a frame. Background Art

[0002] The medium baking mold is also called a multi-connected sub-mold. It is composed of several sub-molds of the baking mold arranged in a rectangular shape. Each sub-mold of the baking mold is connected by laser welding. Since the edge of the medium baking mold is thinner and sharper, the medium baking mold needs to be welded in a rectangular frame.

[0003] A Chinese patent with application number 202020529292.9 discloses a medium-sized fixing device for laser welding of baking boxes. The patent uses a third limit block to abut and limit the side of the circular frame (frame), and then places the baking mold into the frame and completes the laser welding.

[0004] There are many specifications of existing baking molds. The above solution can only weld a baking mold of one specification to the frame, and its versatility is poor, and it cannot meet the welding of baking molds of different specifications to the frame. Utility Model Content

[0005] The utility model aims to provide a baking mould middle and frame laser welding device which can weld baking mould middle and frame of various specifications.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a laser welding device for the middle and frame of a baking mold, comprising a rectangular placing table, a first positioning plate extending in the left-right direction is provided on the front side of the placing table, and a second positioning plate extending in the front-back direction is provided on the left side of the placing table; a plurality of first pressing blocks that can be moved close to or away from the first positioning plate are provided on the opposite side of the first positioning plate, and the plurality of first pressing blocks are arranged at intervals in the left-right direction, and the movable distance of at least one first pressing block on the left side is greater than the movable distance of one first pressing block on the right side; a plurality of second pressing blocks that can be moved close to or away from the second positioning plate are provided on the opposite side of the second positioning plate, and the plurality of second pressing blocks are arranged at intervals in the front-back direction, and the movable distance of at least one second pressing block on the front side is greater than the movable distance of one second pressing block on the rear side.

[0007] During use, the operator first places the frame on the placement table so that the two side edges of the frame are in contact with the first positioning plate and the second positioning plate respectively, and then several first pressing blocks and second pressing blocks move toward the first positioning plate and the second positioning plate to achieve pressing on the other two side edges of the frame. Then the operator places the baking mold in the frame, adjusts the position of the baking mold, and then welds the baking mold to the frame through a laser welding device.

[0008] The movable distance of the first pressing block refers to the distance that the first pressing block can move along the front-rear direction. The movable distances of different first pressing blocks can be the same or different, and the movable distances of the second pressing blocks are similar.

[0009] Among them, when the specifications of the frame become larger, the first pressure block and the second pressure block only need to move a shorter distance to contact the frame, and in order to avoid interference between the first pressure block and the second pressure block during movement, at least one of the first pressure blocks on the left side can move a distance greater than the distance that can be moved by the first pressure block on the right side; the same applies to the second pressure block.

[0010] In this solution, a plurality of first pressing blocks and second pressing blocks are provided, and the first pressing blocks and the second pressing blocks move to press the frame. Since the frame is rectangular, at least one first pressing block on the left side of the first pressing blocks can move a greater distance than a first pressing block on the right side, and at least one second pressing block on the front side of the second pressing blocks can move a greater distance than a second pressing block on the rear side; when the frame is larger or smaller, the first pressing blocks and the second pressing blocks can both press the two sides of the frame, and the versatility is better.

[0011] Preferably, the first pressing block comprises, from left to right, a left first pressing block, a middle first pressing block and a right first pressing block, the movable distances of the left first pressing block are all the same and are greater than the movable distance of the middle first pressing block; the movable distance of the middle first pressing block gradually shortens from left to right; the movable distances of the right first pressing block are all the same and are less than the movable distance of the middle first pressing block; the second pressing block comprises, from front to back, a front second pressing block, a middle second pressing block and a rear second pressing block, the movable distances of the front second pressing block are all the same and are greater than the movable distance of the middle second pressing block; the movable distance of the middle second pressing block gradually shortens from front to back; the movable distances of the rear second pressing blocks are all the same and are less than the movable distance of the middle second pressing block.

[0012] The above arrangement can ensure that frames of different specifications are pressed tightly, and at the same time, the movable distance of the first pressing block and the second pressing block can be optimized to avoid collision between the first pressing block and the second pressing block.

[0013] Preferably, the placing table has a plurality of first slide grooves that are open upward and extend in the front-to-back direction, and the first pressure block is slidably mounted in the first slide grooves, so that the length of the first slide grooves constitutes the movable distance of the first pressure block; the placing table has a plurality of second slide grooves that are open upward and extend in the left-to-right direction, and the second pressure block is slidably mounted in the second slide grooves, and the length of the second slide grooves constitutes the movable distance of the second pressure block.

[0014] The first through groove and the second through groove are provided to guide the first pressing block and the second pressing block when they move.

[0015] Preferably, a screw extending along the length direction of the first slide groove or the second slide groove is provided below the first slide groove and the second slide groove, and the first pressure block and the second pressure block are both matched with the screw thread; when the screw rotates, the first pressure block and the second pressure block move in the first slide groove and the second slide groove.

[0016] The movement of the first pressing block and the second pressing block is achieved by rotating the screw, so that the moving distance of the first pressing block and the second pressing block can be controlled more accurately.

[0017] Preferably, the number of the first positioning plates is multiple and they are spaced apart in the left-right direction, the number of the second positioning plates is multiple and they are spaced apart in the front-back direction; a stop block is provided between two adjacent first positioning plates and between two adjacent second positioning plates, and the stop block is used to contact the side of the baking mold.

[0018] The position of the baking mold in the frame can be limited by the contact between the stop block and the side of the baking mold, ensuring that the portion of the baking mold supported on the frame is uniform.

[0019] Preferably, the lower end surface of the block can contact the upper end surface of the frame, the height of the block is adjustable, and the block is equipped with a driver, and the block can move closer to or away from the side of the baking mold under the action of the driver.

[0020] The height of the stop block is adjustable, so as to ensure that the lower end surface of the stop block contacts the upper end surface of the frame and the stop block does not tilt. At the same time, the driver realizes the movement of the stop block, so that the stop block can be away from the baking mold during laser welding.

[0021] Preferably, a vertically extending movable plate is fixed to the output end of the driver, the stop block is fixed on the movable plate and located on the inner side of the movable plate, the movable plate is used to contact the side edge of the frame to limit the inward movement of the stop block; the height of the stop block on the movable block is adjustable.

[0022] The stop block is located on the inner side of the moving block, and the moving plate is used to contact the side of the frame to limit the inward movement of the stop block, thereby preventing the stop block from moving too inward when the driver is running; at the same time, the height of the stop block on the moving block is adjustable, and it can be fixed by glue, or by setting a vertically extending waist-shaped hole on the stop block and locking it with a locking hole, etc.

[0023] Preferably, at least two pressing plates extending in the front-to-back direction are provided on the placing table, the pressing plates are located above the placing table and can move in the left-right direction, and the pressing plates are used to press the sides of the baking mold.

[0024] The pressing plate is used to press the side of the baking mold so that the baking mold does not tilt up, ensuring that the baking mold and the frame are successfully welded. At the same time, the length of the pressing plate needs to be greater than the length of all the first chutes or the second chutes, so as to ensure that all specifications of baking molds can be pressed.

[0025] Preferably, the pressing plate is arranged at an angle, and the outer side of the pressing plate is lower than the inner side of the pressing plate; when the pressing plate contacts the side of the baking mold, the pressing plate contacts the side line of the baking mold.

[0026] The pressing plate is tilted so that the pressing plate contacts the side line of the baking mold, and the baking mold and the frame can be pressed more tightly. The outer side and the inner side are based on the outer side and the inner side of the placement table.

[0027] Preferably, an inclined portion is provided on the outer side of the pressure plate, an upper end surface of the inclined portion is an inclined surface, and a thickness of the inclined portion gradually increases from the outer side to the inner side to form the inclined surface.

[0028] Since the laser is focused in a conical shape when irradiated, an inclined portion is provided on the outer side of the pressing plate to prevent the laser from irradiating onto the pressing plate.

[0029] The utility model has the advantages of being able to weld baking molds and frames of various specifications and having good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the utility model.

[0031] Figure 2 It is a top view of the utility model.

[0032] Figure 3 Schematic diagram of the screw structure.

[0033] Figure 4 It is a schematic diagram of the structure after the baking mold and the frame are placed.

[0034] Figure 5 This is an enlarged view of the block.

[0035] Figure 6 It is a schematic diagram of the structure below the block.

[0036] Figure 7 The front view of the stop block and pressure plate.

[0037] Figure numbers: 1, placement table; 2, first pressing block; 21, first slide; 211, first pressing block on the left; 212, first pressing block in the middle; 213, first pressing block on the right; 3, second pressing block; 31, second slide; 311, second pressing block in the front; 312, second pressing block in the middle; 313, second pressing block in the back; 41, first positioning plate; 42, second positioning plate; 5, moving frame; 51, moving frame motor; 52, transmission shaft; 6, screw; 7, block; 71, waist-shaped hole; 72, moving block; 73, driver; 8, pressing plate; 81, pressing plate cylinder; 82, inclined portion; 100, medium baking mold; 200, frame. DETAILED DESCRIPTION

[0038] The utility model is further described below based on the accompanying drawings and specific embodiments.

[0039] like Figures 1 to 4 As shown, this embodiment discloses a baking mold medium and frame laser welding device, including a placing table 1, the circumferential shape of the placing table 1 is rectangular, the front side of the placing table 1 is provided with three first positioning plates 41 extending in the left-right direction and evenly spaced, and the left side of the placing table 1 is provided with three second positioning plates 42 extending in the backward direction and evenly spaced.

[0040] The rear side of the placing table 1 is provided with six first slide grooves 21 which are arranged at intervals from left to right and extend in the front-to-back direction. A first pressing block 2 is slidably arranged in each first slide groove 21. The upper end of the first pressing block 2 is exposed outside the first slide groove 21 and is used to press the frame 200. The length of the first slide groove 21 constitutes the movable distance of the first pressing block 21. The first pressing blocks 21 include two left first pressing blocks 211, two middle first pressing blocks 212 and two right first pressing blocks 213 from left to right; the lengths of the first slide grooves 21 of the two left first pressing blocks 211 are the same and both are greater than the lengths of the two middle first pressing blocks 212, the length of the first slide groove 21 of the left middle first pressing block 212 is greater than the length of the first slide groove of the right middle first pressing block 212; the lengths of the first slide grooves 21 of the two right first pressing blocks 213 are the same and less than the length of the first slide groove 21 of the middle first pressing block 212.

[0041] Six second slide grooves 31 are arranged at intervals in front and back and extend in the left and right directions on the right side of the placing table 1. A second pressing block 3 is slidably arranged in each second slide groove 31. The upper end of the second pressing block 3 is exposed outside the second slide groove 31 and is used to press the frame 200. The length of the second slide groove 31 constitutes the movable distance of the second pressing block 3. The second pressing block 3 includes two front second pressing blocks 311, two middle second pressing blocks 312 and two rear second pressing blocks 313 from left to right; the lengths of the second slide grooves 31 of the two front second pressing blocks 311 are the same and both are greater than the lengths of the two middle second pressing blocks 312, the length of the second slide groove 31 of the left middle second pressing block 312 is greater than the length of the first slide groove of the right middle second pressing block 312; the lengths of the second slide grooves 31 of the two rear second pressing blocks 313 are the same and less than the length of the second slide groove 31 of the middle second pressing block 312.

[0042] A screw rod 6 extending in the front-to-back direction and in the left-to-right direction is provided below the table surface of the placing table 1. The first pressing block 2 and the second pressing block 3 are both threadedly matched with the screw rod 6. The length of the screw rod 6 is related to the length of the respective first slide groove 21 and the second slide groove 31. Guide rods extending in the direction of the screw rod 6 are provided on both sides of the screw rod 6. The first pressing block 2 and the third pressing block 3 are slidably matched with the guide rods. The screw rod 6 is rotated by a servo motor.

[0043] like Figure 5 and Figure 6 As shown, a stopper 7 is provided between two adjacent first positioning plates 41 and two adjacent second positioning plates 42, the inner side of the stopper 7 can contact the side of the baking mold 100, and the lower end surface of the stopper 7 can contact the upper end surface of the frame 200. The stopper 7 is fixed on a vertically arranged moving block 72, and the moving block 72 is moved inward and outward by a driver 73, and the driver 73 is a cylinder. The stopper 7 is provided with a waist-shaped hole 71 extending in the up-down direction, and the stopper is fixed on the moving block 72 by the cooperation of a bolt (not shown in the figure) and a nut (not shown in the figure), and the height of the stopper can be adjusted.

[0044] like Figure 1 , Figure 4 , Figure 5 and Figure 7As shown, two movable racks 5 are arranged at intervals on the upper side of the placing table 1. The movable racks 5 extend along the front-back direction of the placing table 1. A movable rack motor 51 is arranged on both the left and right sides of the placing table 1. The movable rack motor 51 drives a transmission shaft 52. The transmission shaft 52 is connected to a gear (not shown in the figure). A synchronous belt (not shown in the figure) is meshed on the gear. The movable rack 5 and the synchronous belt have a connection part. When the movable rack motor 51 is running, the movable rack 5 will move in the left and right directions. A plurality of pressing plate cylinders 81 are suspended at the lower end of the movable rack 5. A pressing plate 8 is connected to the output end of each pressing plate cylinder 81. The pressing plate 8 is arranged obliquely, and the outer side of the pressing plate 8 is lower than the inner side of the pressing plate 8; when the pressing plate 8 contacts the side of the baking mold 100, the pressing plate 8 contacts the side line of the baking mold 100. An inclined portion 82 is arranged on the outer side of the pressing plate 8. The upper end surface of the inclined portion 82 is an inclined surface. The thickness of the inclined portion 82 gradually increases from the outer side to the inner side to form the inclined surface.

[0045] During use, the operator places the frame 200 on the placement table 1 so that the two sides of the frame 200 are in contact with the first positioning plate 41 and the second positioning plate 42 respectively. Then the screw 6 rotates so that the first pressing block 2 and the second pressing block 3 press the other two sides of the frame 200, and the stop block 7 moves inward. Then the baking mold 100 is placed on the frame 200 so that the side of the baking mold 100 is supported on the frame 200. The operator adjusts the position of the baking mold 100 to ensure that the inner side of the stop block 7 is in contact with the side of the baking mold 100. Then the moving frame 5 moves, and the moving frame 5 moves to the top of the side of the baking mold 100 and presses down the side of the baking mold 100. After pressing the side of the baking mold 100, the stop block 7 moves outward, and the laser welding device performs laser welding on the two sides of the baking mold 100 and the two sides of the frame 200. After completing the welding on both sides, the operator rotates the entire baking mold 100 and the frame 200 90° and repeats the above operation. When welding the sides on the other two sides, the stop block 7 does not need to contact the sides because the welding in the previous step has preliminarily fixed the baking mold 100 and the frame 200.

Claims

1. A laser welding device for a baking mold and a frame, comprising a rectangular placement table, characterized in that: A first positioning plate extending in the left-right direction is provided on the front side of the placing table, and a second positioning plate extending in the front-back direction is provided on the left side of the placing table; a plurality of first pressing blocks capable of being moved closer to or away from the first positioning plate are provided on the opposite side of the first positioning plate, and the plurality of first pressing blocks are spaced apart in the left-right direction, and a movable distance of at least one first pressing block on the left side is greater than a movable distance of one first pressing block on the right side; a plurality of second pressing blocks capable of being moved closer to or away from the second positioning plate are provided on the opposite side of the second positioning plate, and the plurality of second pressing blocks are spaced apart in the front-back direction, and a movable distance of at least one second pressing block on the front side is greater than a movable distance of one second pressing block on the rear side.

2. The baking mold and frame laser welding device according to claim 1, characterized in that: The first pressing block includes, from left to right, a left first pressing block, a middle first pressing block and a right first pressing block, the movable distances of the left first pressing block are all the same and are greater than the movable distance of the middle first pressing block; the movable distance of the middle first pressing block gradually shortens from left to right; the movable distances of the right first pressing blocks are all the same and are less than the movable distance of the middle first pressing block; the second pressing block includes, from front to back, a front second pressing block, a middle second pressing block and a rear second pressing block, the movable distances of the front second pressing block are all the same and are greater than the movable distance of the middle second pressing block; the movable distance of the middle second pressing block gradually shortens from front to back; the movable distances of the rear second pressing blocks are all the same and are less than the movable distance of the middle second pressing block.

3. The baking mold and frame laser welding device according to claim 2, characterized in that: The placing table is provided with a plurality of first slide grooves which are open upward and extend in the front-to-back direction, and the first pressure block is slidably mounted in the first slide grooves, so that the length of the first slide grooves constitutes the movable distance of the first pressure block; the placing table is provided with a plurality of second slide grooves which are open upward and extend in the left-to-right direction, and the second pressure block is slidably mounted in the second slide grooves, and the length of the second slide grooves constitutes the movable distance of the second pressure block.

4. The baking mold and frame laser welding device according to claim 3, characterized in that: A screw extending along the length direction of the first slide groove or the second slide groove is provided below the first slide groove and the second slide groove, and the first pressure block and the second pressure block are both matched with the screw thread; when the screw rotates, the first pressure block and the second pressure block move in the first slide groove and the second slide groove.

5. The baking mold and frame laser welding device according to claim 1, characterized in that: There are multiple first positioning plates and they are spaced apart in the left-right direction, there are multiple second positioning plates and they are spaced apart in the front-back direction; abutments are provided between two adjacent first positioning plates and between two adjacent second positioning plates, and the abutments are used to contact the side of the baking mold.

6. The baking mold and frame laser welding device according to claim 5, characterized in that: The lower end surface of the stop block can contact the upper end surface of the frame, the height of the stop block is adjustable, and the stop block is equipped with a driver. Under the action of the driver, the stop block can move closer to or away from the side of the baking mold.

7. The baking mold and frame laser welding device according to claim 6, characterized in that: A vertically extending moving plate is fixed to the output end of the driver, the stop block is fixed on the moving plate and is located on the inner side of the moving plate, and the moving plate is used to contact the side of the frame to limit the inward movement of the stop block; the height of the stop block on the moving block is adjustable.

8. The baking mold and frame laser welding device according to claim 6, characterized in that: At least two pressing plates extending in the front-rear direction are arranged on the placing table, the pressing plates are located above the placing table and can move in the left-right direction, and the pressing plates are used to press the sides of the baking mold.

9. The baking mold and frame laser welding device according to claim 8, characterized in that: The pressing plate is arranged obliquely, and the outer side edge of the pressing plate is lower than the inner side edge of the pressing plate; when the pressing plate contacts the side edge of the baking mold, the pressing plate contacts the side edge line of the baking mold.

10. The baking mold center and frame laser welding device according to claim 8, characterized in that: An inclined portion is provided on the outer side of the pressing plate, an upper end surface of the inclined portion is an inclined surface, and a thickness of the inclined portion gradually increases from the outer side to the inner side to form the inclined surface.

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