Workpiece conveying device for metal heat treatment

Abstract

The invention relates to a workpiece conveying device, in particular to a workpiece conveying device for metal heat treatment. The heat treatment device comprises a plurality of heat treatment box bodies fixed on a foundation, a first guide rail and a second guide rail are arranged right in front of the heat treatment box bodies, the first guide rail and the second guide rail are vertically arranged, a movable ferry vehicle is arranged on the first guide rail, a material vehicle is arranged on the second guide rail, and the material vehicle can be integrally moved to the ferry vehicle; an openable and closable box door is arranged on the front surface of the heat treatment box body, a liftable placing plate is arranged on the material trolley, and the upper edge of the placing plate is in contact with the heat treatment box body and the lower part of the box door, so that the heat treatment box body is closed. According to the workpiece conveying device for metal heat treatment, the material trolley for supporting materials directly enters the heat treatment box body after moving through the guide rails, heat preservation operation is conducted on heated workpieces, the workpieces do not need to be taken down in the whole transferring work, and the transferring efficiency of the heat treatment workpieces is improved while safety production is ensured.

Description

Technical Field

[0001] The invention relates to a workpiece conveying device, in particular to a workpiece conveying device for metal heat treatment. Background Art

[0002] Metal heat treatment is a key process in mechanical manufacturing. Compared to other machining processes, heat treatment generally does not alter the workpiece's shape or overall chemical composition. Instead, it modifies the workpiece's internal microstructure or surface chemical composition to enhance or improve its performance. Its hallmark is improving the workpiece's intrinsic quality, which is generally not visible to the naked eye. To ensure that metal workpieces possess the desired mechanical, physical, and chemical properties, heat treatment is often essential, in addition to the appropriate selection of materials and various forming techniques.

[0003] The heat treatment process generally includes three steps: heating, holding, and cooling. During the holding process, the workpiece is moved into a holding chamber for insulation. Normally, the holding chamber is sealed, and transfer equipment moves the workpiece to the front of the chamber. This requires an additional transport mechanism to get the workpiece into the chamber, resulting in low transport efficiency.

[0004] In view of the above-mentioned defects, the designer has actively carried out research and innovation in order to create a workpiece conveying device for metal heat treatment to make it more valuable for industrial use. Summary of the Invention

[0005] In order to solve the above technical problems, an object of the present invention is to provide a workpiece conveying device for metal heat treatment.

[0006] A workpiece conveying device for metal heat treatment of the present invention includes multiple heat treatment boxes fixed on the foundation, a first guide rail is provided in front of the heat treatment box, a second guide rail is arranged perpendicular to the first guide rail, a movable shuttle car is provided on the first guide rail, a material car is placed on the second guide rail, and the material car can be moved as a whole to the shuttle car, the lower end of the heat treatment box is open, and a box door that can be opened and closed is provided on the front of the heat treatment box, a liftable placement plate is provided on the material car, the upper edge of the placement plate is in contact with the heat treatment box and the bottom of the box door, so that the heat treatment box is formed in a closed state, and a third guide rail with the same structure as the second guide rail is installed in the space below the heat treatment box.

[0007] This workpiece conveying device for metal heat treatment supports a material cart that moves through multiple guide rails and then directly enters the heat treatment box to perform insulation operations on the heated workpiece. The entire transfer process does not require the removal of the workpiece, which not only ensures safe production but also improves the efficiency of heat treatment workpiece transfer.

[0008] Furthermore, the second guide rail and the third guide rail are fixedly installed on the foundation through a bracket, and the four corners of the shuttle bus frame are provided with first rollers that cooperate with the first guide rail. The top of the shuttle bus frame is provided with a fourth guide rail that docks with the second guide rail, and the fourth guide rail, the second guide rail and the third guide rail are at the same height.

[0009] The second guide rail and the third guide rail are at the same height as the fourth guide rail on the shuttle bus, so the material vehicle can be moved on the second guide rail, the third guide rail and the shuttle bus, making it convenient for the material vehicle to be transferred.

[0010] Furthermore, there are first limit plates standing upward on both sides of the tail end of the fourth guide rail.

[0011] The first limit plate erected at the tail end of the fourth guide rail prevents the material vehicle from slipping off the fourth guide rail.

[0012] Furthermore, there are second rollers at the four corners of the material cart frame, and the upper connecting plate and the lower connecting plate are movably installed on the bottom and the mounting plate of the material cart frame through shafts respectively. The upper connecting plate and the lower connecting plate are divided into two groups, front and rear. The upper connecting plate and the lower connecting plate on the same side are movably connected through a connecting shaft. There is a screw sleeve in the middle of the connecting shaft, and there are threaded sections at both ends of the transmission shaft that cooperate with the screw sleeve. A rotating handle is installed at the tail end of the transmission shaft.

[0013] The material vehicle is divided into a frame and a placement plate. The frame and the placement plate are movably connected through an upper connecting plate and a lower connecting plate. There are threaded sections at both ends of the drive shaft. These two threaded sections are in opposite directions. When the drive shaft is rotated, the screw sleeve installed on the drive shaft is driven to move inward and outward synchronously, driving the upper connecting plate and the lower connecting plate to rotate, thereby completing the up and down movement of the placement plate.

[0014] Furthermore, a whole contact plate is placed above the placement plate, a support plate is provided in the middle of the contact plate, the support plate is smaller than the contact plate, and the contact plate contacts the heat treatment box body and the bottom edge of the box door.

[0015] The contact plate on the placement plate is used to place the support plate, and the support plate is used to place the workpiece. At the same time, a step is formed between the contact plate and the placement plate. When in use, the contact plate contacts the heat treatment box and the bottom edge of the box door, so that the box forms a closed space for easy heat preservation.

[0016] Furthermore, a thermal insulation layer is provided above the support plate, and a workpiece plate is placed above the thermal insulation layer.

[0017] The insulation layer installed above the support plate is made of thermal insulation material and has good thermal insulation function to prevent the loss of temperature in the box. At the same time, the workpiece plate is used to place the workpiece after heat treatment.

[0018] Furthermore, the thermal insulation layer is formed by splicing a plurality of thermal insulation blocks.

[0019] The thermal insulation layer is composed of multiple block-shaped objects, which makes it easy to replace damaged parts.

[0020] Furthermore, an inwardly protruding clamping plate is provided in the heat treatment box, and a stepped clamping plate is provided below the clamping plate, which is fitted with the contact plate.

[0021] The clamping plate at the lower end of the heat treatment box protrudes inward and contacts the contact plate, making it easier to seal the box space.

[0022] Furthermore, a sealing plate is fixed on the upper side of the clamping plate, and the sealing plate contacts the outer wall of the thermal insulation layer. An outwardly protruding baffle is provided on the outer side of the workpiece plate, and the baffle contacts the upper edge of the sealing plate.

[0023] The sealing plate and baffle installed on the pallet cooperate to further improve the airtightness between the material vehicle and the heat treatment box, thereby improving the thermal insulation effect.

[0024] Furthermore, the four corners of the first guide rail are provided with second limit plates standing upward.

[0025] The second limit plate on the first guide rail is used to limit the maximum moving distance of the shuttle bus to prevent the shuttle bus from slipping off the first guide rail.

[0026] By means of the above solution, the present invention has at least the following advantages: 1. This device provides a special transport tool. Workers can use tools such as push-pull rods to contact the material cart body and make the material cart enter the heat treatment box to avoid burns caused by direct contact with the material cart.

[0027] 2. This transport device can be used in conjunction with multiple heat treatment boxes at the same time, making it convenient to heat treat the workpieces at the same time.

[0028] 3. The open heat treatment box is in direct contact with the material cart, which simplifies the workpiece transfer process while ensuring the effect of heat preservation treatment.

[0029] 4. The upper structure of the material cart is liftable, which makes the material cart and the box body in closer contact and avoids heat loss.

[0030] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate a certain embodiment of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the first guide rail, the second guide rail, the material car and the ferry car of the present invention.

[0034] Figure 3 It is a schematic diagram of the coordination between the second guide rail / third guide rail and the material cart of the present invention.

[0035] Figure 4 It is a front view of a material vehicle of the present invention.

[0036] Figure 5 This invention Figure 4 Left view of .

[0037] Figure 6 This invention Figure 1 Enlarged schematic diagram of area A in the middle.

[0038] In the figure, 1 is a heat treatment box, 2 is a first guide rail, 3 is a second guide rail, 4 is a shuttle car, 5 is a material car, 6 is a placement plate, 7 is a box door, 8 is a third guide rail, 9 is a first roller, 10 is a fourth guide rail, 11 is a bracket, 12 is a first limit plate, 13 is a second roller, 14 is an upper connecting plate, 15 is a lower connecting plate, 16 is a connecting shaft, 17 is a screw sleeve, 18 is a transmission shaft, 19 is a contact plate, 20 is a support plate, 21 is a thermal insulation layer, 22 is a workpiece plate, 23 is a clamping plate, 24 is a clamping plate, 25 is a sealing plate, 26 is a baffle, and 27 is a second limit plate. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0040] See also Figure 1 and Figure 2 The workpiece conveying device for metal heat treatment includes two heat treatment boxes 1, a first guide rail 2 is placed parallel to the heat treatment boxes 1, and at the same time, a second guide rail 3 is arranged at a position perpendicular to the first guide rail 2.

[0041] During work, the first material cart 5 is placed on the second guide rail 3, and the material cart 5 is transferred to the shuttle cart 4 by pushing and pulling. The shuttle cart 4 moves on the first guide rail 2 and is moved to the front of any heat treatment box 1. The material cart 5 on the shuttle cart 4 enters the third guide rail 8 in the heat treatment box 1, and then the box door 7 is closed to make the heat treatment box 1 in a closed state. The heat treatment box 1 can then heat-treat the workpiece on the material cart 5. At this time, the second material cart 5 is lifted onto the second guide rail 3, and the operation is repeated to send the second material cart 5 into another heat treatment box 1. At this time, the workpieces in the two groups of material carts 5 are in heat treatment operation.

[0042] When three or more groups of heat treatment boxes 1 are set up, a corresponding number of material carts 5 are required. The material carts 5 can be placed on the third guide rail 8 in the heat treatment box 1. When in use, a material cart 5 is first removed from one of the heat treatment boxes 1. The material cart 5 is transferred to the second guide rail 3 under the movement of the shuttle car 4 to complete the loading of the workpiece, and then transported to the heat treatment box 1. The operation is repeated, and finally a material cart 5 with the workpiece is placed in each heat treatment box 1.

[0043] See also Figure 1 and Figure 2 , there is a third guide rail 8 supported by a bracket 11 in the heat treatment box 1, and the second guide rail 3 is also supported by the bracket 11. The second guide rail 3 and the third guide rail 8 have the same structure and height, and can be used in conjunction with the ferry car 4 on the first guide rail 2. The four corners of the ferry car 4 are installed with first rollers 9, and the middle part of the first roller 9 is concave, which can be stuck on the first guide rail 2 for movement. The fourth guide rail 10 installed on the ferry car 4 cooperates with the second guide rail 3 and the third guide rail 8, so that the material car 5 can move smoothly on the fourth guide rail 10, the second guide rail 3 and the third guide rail 8, which is convenient for transfer.

[0044] See also Figure 2 The first limit plate 12 at the tail end of the fourth guide rail 10 plays a blocking role, limiting the maximum moving position of the material cart 5, so that the material cart 5 will not slip off the fourth guide rail 10. See also Figure 3 and Figure 4, a second roller 13 is installed on the frame of the material cart 5. The second roller 13 has the same structure as the first roller 9, which is a concave structure. The second roller 13 is used in conjunction with the second guide rail 3, the third guide rail 8 and the fourth guide rail 10. A lower connecting plate 15 is movably installed on the frame of the material cart 5 through an axis, and an upper connecting plate 14 is installed on the placement plate 6 through an axis. The upper end of the lower connecting plate 15 is open, and the upper connecting plate 14 is inserted into the opening, and then the upper connecting plate 14 and the lower connecting plate 15 are movably connected through the connecting shaft 16. Then, there is a screw sleeve 17 in the middle of the connecting shaft 16, and a transmission shaft 18 passes through the two screw sleeves 17, and the threads at both ends of the transmission shaft 18 are reverse threads. By rotating the handle to rotate the transmission shaft 18, the two screw sleeves 17 are moved inward or outward synchronously, and then the upper connecting plate 14 and the lower connecting plate 15 are driven to drive the placement plate 6 up and down. After the placement plate 6 rises, it can contact the lower edge of the heat treatment box 1 and the box door 7, and the heat treatment box 1 is combined with the placement plate 6 to form a closed space, which is convenient for heat preservation heat treatment.

[0045] See also Figure 5 and Figure 6 There is a contact plate 19 above the placement plate 6, which can contact the lower edge of the heat treatment box 1 and the box door 7. The size of the support plate 20 is smaller than the contact plate 19, so that the contact plate 19 and the support plate 20 form a step shape. The support plate 20 will not contact the heat treatment box 1 and the box door 7 to avoid interference.

[0046] There is an insulation layer 21 between the support plate 20 and the workpiece plate 22. The insulation layer 21 is made of insulation material, which includes but is not limited to polyurethane foam, polystyrene board, EPS, XPS, and phenolic foam. After the insulation layer 21 is placed, it serves the purpose of insulation to prevent temperature loss in the heat treatment box 1.

[0047] The workpiece plate 22 is used to place the workpiece and plays a role in supporting the workpiece.

[0048] The thermal insulation layer 21 is composed of a plurality of thermal insulation blocks, and it is convenient to replace one thermal insulation block after it is damaged.

[0049] See also Figure 6 There is an inwardly protruding card plate 23 at the lower end of the heat treatment box 1, and the contact plate 19 at the upper end of the material cart 5 contacts the card plate 24 below the card plate 23. There is a step-shaped structure below the card plate 24 that fits with the contact plate 19, so that the card plate 24 fits with the contact plate 19, thereby improving the airtightness between the heat treatment box 1 and the material cart 5 and improving the thermal insulation effect.

[0050] The upper side of the clamping plate 23 is a sealed plate 25, the inner side of the sealed plate 25 contacts the outer side wall of the thermal insulation layer 21 to provide sealing. At the same time, the outer side of the workpiece plate 22 is an outwardly protruding baffle 26, which contacts the upper side of the sealed plate 25, thereby further improving the sealing effect and effectively keeping the heat treatment box 1 warm.

[0051] See also Figure 1 The second limiting plates 27 at the four corners of the first guide rail 2 limit the maximum displacement position of the shuttle bus 4.

[0052] The working principle of the present invention is as follows: by Figure 1 Take the two sets of heat treatment boxes 1 as an example to explain the working principle: First, two material carts 5 are required to correspond to the two groups of heat treatment boxes 1. Before placing the workpiece on the material cart 5, one material cart 5 is placed in the heat treatment box 1, and the other material cart 5 is located on the second guide rail 3. The workpiece is transferred to the material cart 5 through another manipulator mechanism. The worker drives the material cart 5 from the second guide rail 3 to the shuttle car 4 through the push-pull rod mechanism. The shuttle car 4 moves on the first guide rail 2. The shuttle car 4 is also pushed by the worker to align the fourth guide rail 10 on the shuttle car 4 with the vacant At this time, the rotary handle is turned to drive the transmission shaft 18 to rotate, so that the placement plate 6 rises, and the contact plate 19 above the placement plate 6 is at the same height as the positioning plate 24 corresponding to the heat treatment box 1. The lower edge of the baffle 26 on the workpiece plate 22 is at the same height as the sealing plate 25. The material cart 5 is pushed into the heat treatment box 1, so that the contact plate 19 is in contact with the positioning plate 24, and the baffle 26 is docked with the sealing plate 25. Then the box door 7 is closed to form a closed space in the heat treatment box 1 for heat preservation.

[0053] The material cart 5 originally located in the heat treatment box 1 is moved into the shuttle car 4, and the shuttle car 4 then moves the material cart 5 onto the second guide rail 3, places the workpiece on the material cart 5, and then returns to the heat treatment box 1 to complete the loading operation.

[0054] After the heat treatment is completed, the box door 7 is opened, the material car 5 is moved to the shuttle car 4 on the first guide rail 2, and then moved to the second guide rail 3, and the workpiece is removed by the robot.

[0055] The cycle operation can realize the loading and unloading of workpieces and complete the heat treatment of insulation.

[0056] If it is a combination of multiple heat treatment boxes 1, then the number of material carts 5 needs to be consistent with the heat treatment boxes 1. When loading the workpiece, one material cart 5 is located outside the heat treatment box 1, and the others are located inside the heat treatment box 1. The material carts 5 circulate to load and enter the heat treatment box 1, and finally all the material carts 5 with the workpieces are placed in the heat treatment box 1. During the heat treatment process, the heat treatment is completed in sequence. The workpiece that is completed first is taken out and then the loading operation is performed. This cycle improves the work efficiency of the heat treatment.

[0057] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change. Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict. Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A workpiece conveying device for metal heat treatment, comprising a plurality of heat treatment boxes (1) fixed on a foundation, characterized in that: A first guide rail (2) is provided in front of the heat treatment box (1), and a second guide rail (3) is arranged vertically with the first guide rail (2). A movable shuttle car (4) is provided on the first guide rail (2), and a material car (5) is arranged on the second guide rail (3). The material car (5) can be moved as a whole onto the shuttle car (4). The lower end of the heat treatment box (1) is open, and a box door (7) that can be opened and closed is provided on the front of the heat treatment box (1). A liftable placement plate (6) is provided on the material car (5), and the upper edge of the placement plate (6) contacts the heat treatment box (1) and the bottom of the box door (7), so that the heat treatment box (1) forms a closed state. A third guide rail (8) having the same structure as the second guide rail (3) is installed in the space below the heat treatment box (1).

2. A workpiece conveying device for metal heat treatment according to claim 1, characterized in that: The second guide rail (3) and the third guide rail (8) are fixedly mounted on the foundation via a bracket (11); first rollers (9) cooperating with the first guide rail (2) are provided at the four corners of the frame of the shuttle bus (4); a fourth guide rail (10) docking with the second guide rail (3) is provided above the frame of the shuttle bus (4); and the fourth guide rail (10), the second guide rail (3) and the third guide rail (8) are at the same height.

3. A workpiece conveying device for metal heat treatment according to claim 2, characterized in that: Both sides of the rear end of the fourth guide rail (10) are provided with first limit plates (12) erected upwards.

4. A workpiece conveying device for metal heat treatment according to claim 1, characterized in that: The four corners of the frame of the material cart (5) are provided with second rollers (13). The bottom of the frame of the material cart (5) and the placement plate (6) are respectively provided with an upper connecting plate (14) and a lower connecting plate (15) movably mounted through shafts. The upper connecting plate (14) and the lower connecting plate (15) are divided into two groups, front and rear. The upper connecting plate (14) and the lower connecting plate (15) on the same side are movably connected through a connecting shaft (16). A screw sleeve (17) is provided in the middle of the connecting shaft (16). Both ends of the transmission shaft (18) are provided with threaded sections that cooperate with the screw sleeve (17). A rotating handle is provided at the rear end of the transmission shaft (18).

5. A workpiece conveying device for metal heat treatment according to claim 1 or 4, characterized in that: A whole contact plate (19) is disposed above the placement plate (6), a support plate (20) is disposed in the middle of the contact plate (19), and the support plate (20) is smaller than the contact plate (19). The contact plate (19) contacts the lower edges of the heat treatment box body (1) and the box door (7).

6. A workpiece conveying device for metal heat treatment according to claim 5, characterized in that: A temperature insulation layer (21) is provided above the support plate (20), and a workpiece plate (22) is placed above the temperature insulation layer (21).

7. A workpiece conveying device for metal heat treatment according to claim 6, characterized in that: The thermal insulation layer (21) is formed by splicing a plurality of thermal insulation blocks.

8. A workpiece conveying device for metal heat treatment according to claim 7, characterized in that: A clamping plate (23) protruding inward is provided in the heat treatment box (1), and a stepped clamping plate (24) is provided below the clamping plate (23). The clamping plate (24) is fitted with the contact plate (19).

9. A workpiece conveying device for metal heat treatment according to claim 8, characterized in that: A sealing plate (25) is fixed on the upper side of the clamping plate (23), and the sealing plate (25) contacts the outer wall of the thermal insulation layer (21). A baffle (26) protruding outward is provided on the outer side of the workpiece plate (22), and the baffle (26) contacts the upper edge of the sealing plate (25).

10. A workpiece conveying device for metal heat treatment according to claim 9, characterized in that: Four corners of the first guide rail (2) are provided with second limit plates (27) erected upwards.

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