Forming cylinder with replaceable printing substrate

Abstract

The utility model belongs to the technical field of 3D printing equipment, and particularly provides a forming cylinder with a replaceable printing substrate, which comprises a forming cylinder body and a printing table. The printing table and the inner wall of the forming cylinder body are connected in a sliding and sealing mode. The printing table comprises a bottom plate and a printing substrate; the printing substrate is detachably installed on the top of the bottom plate. According to the forming cylinder with the replaceable printing substrate, rapid feeding and discharging of printing and rapid replacement of the new printing substrate and the old printing substrate can be achieved, the forming cylinder can be rapidly replaced after printing is completed, and equipment can also conduct next printing work while powder of a workpiece is removed. Compared with a traditional machining design, the cyclic utilization efficiency of equipment is greatly improved, complete unmanned automatic circulation can be achieved, and compared with a manual substrate replacement mode, the efficiency is improved by 70%. And due to the design of magnetic attraction, a concave buckle and a cover on the top of the cylinder, subsequent automatic operation is guaranteed, accurate butt joint and automatic leveling functions are achieved, and the printing forming quality is fully guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to 3D printing equipment technical field, concretely relates to a forming cylinder of replaceable printing base plate. BACKGROUND

[0002] Powder additive manufacturing technology is an advanced additive manufacturing technology that uses to be shaped powder to solidify after layering powder, bonding, sintering or melting, also known as 3D printing, which can realize complex shape part manufacturing. In the 3D printing process, the three-dimensional model is sliced and layered first, then the powder material is laid on the printing platform in the forming cylinder, after laying, printing, after printing, the printing platform drops a layer, lays powder again, and repeats the above process until printing is completed.

[0003] The model needs to be attached to the printing platform, and as the printing proceeds, the model bottom temperature decreases, and the model and the printing platform may be warped or even the whole model falls off, so many 3D printers have heating devices to continuously heat the model, and after printing is completed, the model and the printing platform are firmly bonded, and the model can be removed after the printing platform temperature decreases, to prevent deformation of the model during removal, and continue new printing. In addition, due to the variety of printing materials, different materials need to be replaced by changing the platform to adapt to different materials, to ensure that the printing material and the platform have a certain adhesion, and also facilitate the separation of the product and the platform. Therefore, a platform structure capable of quick replacement is designed to meet the demand of frequent platform replacement, thereby improving product quality and not affecting product production efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the problem of low printing platform replacement efficiency in the prior art, which affects product production efficiency.

[0005] Therefore, the utility model provides a forming cylinder of replaceable printing base plate, which comprises a forming cylinder body and a printing table, the printing table and the inner wall of the forming cylinder body are connected in sliding sealing, the printing table comprises a bottom plate and a printing base plate, and the printing base plate is detachably installed on the bottom plate.

[0006] Specifically, the bottom plate is provided with a limiting protrusion, the printing base plate is provided with a limiting groove matched with the limiting protrusion, and the printing base plate is detachably installed on the top of the bottom plate through the limiting protrusion and the limiting groove.

[0007] Specifically, the bottom plate is provided with a buckle, the printing base plate is provided with a clamping groove matched with the buckle, and the buckle and the clamping groove are detachably connected.

[0008] Specifically, the bottom plate is provided with a magnetic attraction element; the bottom of the printing substrate is provided with an adapter plate; the magnetic attraction element and the adapter plate are magnetically connected.

[0009] Specifically, the side arm of the printing substrate is provided with a mechanical arm clamping groove.

[0010] Specifically, the bottom plate is provided with a heater for heating the printing substrate.

[0011] Specifically, the bottom of the bottom plate is provided with a connecting piece for interfacing with a printer control device.

[0012] Specifically, the forming cylinder of the replaceable printing substrate further comprises a cylinder cover; the cylinder cover is detachably connected to the top of the forming cylinder body.

[0013] Specifically, the forming cylinder body is provided with a side arm outside for clamping and carrying.

[0014] Specifically, the printing table is matched with the inner cavity of the forming cylinder body, and a sealing ring is arranged on the peripheral surface of the printing table in contact with the inner wall of the forming cylinder body.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] The forming cylinder of the replaceable printing substrate provided by the utility model can realize rapid feeding and discharging of printing, rapid replacement of new and old printing substrates, rapid replacement of the forming cylinder after printing is completed, workpiece powder cleaning, and the next printing work of the equipment. Compared with the traditional processing design, the circulation utilization efficiency of the equipment is greatly improved, and complete unmanned automatic circulation can be realized. Compared with the traditional manual substrate replacement method, the efficiency is improved by 70%. The magnetic attraction, the concave buckle, and the cylinder top cover design also provide protection for subsequent automatic operation, the precise docking and automatic leveling function also fully guarantee the printing and forming quality.

[0017] The utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0018] Figure 1 is the forming cylinder structure schematic view of the replaceable printing substrate provided by the utility model.

[0019] Figure 2 is the printing table structure schematic view of the forming cylinder provided by the utility model.

[0020] Figure 3 is the bottom plate structure schematic view of the forming cylinder provided by the utility model.

[0021] Figure 4 is the first perspective view structure schematic view of the printing substrate of the forming cylinder provided by the utility model.

[0022] Figure 5 is a second visual angle structure schematic diagram of a printing substrate of a forming cylinder provided by the utility model.

[0023] Figure 6 is a structure schematic diagram of a forming cylinder body provided by the utility model.

[0024] Mark explanation: 1, forming cylinder body;101, upper side arm;102, lower side arm;2, bottom plate;201, limit protrusion;202, buckle;203, magnetic attraction piece;3, printing substrate;301, limit groove;302, clamping groove;303, adapter plate;304, mechanical arm clamping groove;4, sealing ring;5, cylinder cover. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0027] Reference Figures 1-2The utility model provides a kind of replaceable printing base plate's forming cylinder, including forming cylinder body 1 and printing table;The printing table with the inner wall between forming cylinder body 1 Sliding seal connection;The printing table includes bottom plate 2 and printing base plate 3;The printing base plate 3 can be detachably installed on the bottom plate 2.Use streamline to be transported to printing position with forming cylinder device, by the jacking cylinder or other feasible equipment being arranged below to be lifted with printing equipment and be connected, ensure that forming cylinder is in place, print is carried out.Line transports out the printing forming cylinder device that has been completed, and the new forming cylinder ready for use is changed directly to start a new round of printing.Forming cylinder that has been completed printing is transported to powder cleaning machine, and printing table drives printing piece to be lifted to leave forming cylinder body 1 in forming cylinder body 1, during the lifting process, most of the powder will flow out of the cylinder body under gravity.Mechanical arm grabs printing base plate 3, and the connection between printing base plate 3 and bottom plate 2 is released, and 360 degree powder cleaning is started.Bottom plate 2 is combined with new printing base plate 3, and the next round of printing is put in.By the forming cylinder provided by the utility model, the next round of printing can be carried out quickly by replacing consumables, and the automatic powder cleaning of printing cylinder and printing workpiece can also be completed synchronously, which not only can reduce labor cost, but also can greatly improve the utilization efficiency of equipment.

[0028] Optionally, the top and bottom of the forming cylinder body 1 are provided with openings, i.e., an internal through cavity is formed, the printing table is installed in the cavity, and is in sliding seal connection with the cavity wall, a jacking device is arranged at the printing position, so that in the working state, the jacking end of the jacking device penetrates the bottom opening of the forming cylinder body 1 and extends into the forming cylinder body 1, contacts the bottom of the printing table, and pushes the printing table to slide up and down in the forming cylinder body 1.

[0029] Specifically, the bottom plate 2 is provided with a limiting protrusion 201, the printing base plate 3 is provided with a limiting groove 301 matched with the limiting protrusion 201, and the printing base plate 3 is detachably installed on the top of the bottom plate 2 through the limiting protrusion 201 and the limiting groove 301. Figures 3-5 As shown in the drawing, the limiting protrusion 201 is preferably a T-shaped protruding strip, and the limiting groove 301 is preferably a T-shaped groove matched with the T-shaped protruding strip, which is inserted into the T-shaped groove from the side during use to realize the connection between the printing base plate 3 and the bottom plate 2.After printing, the bottom plate 2 drives the printing base plate 3 to rise and leave the forming cylinder body 1, the mechanical arm grabs the printing base plate 3, and the printing base plate 3 is pulled out from the side to release the connection between the printing base plate 3 and the bottom plate 2.The number, length and arrangement position of the T-shaped protruding strip and the T-shaped groove are designed according to the actual size of the printing base plate 3 and the bottom plate 2 to ensure the stability of the connection between the two.

[0030] In order to improve the connection stability of the bottom plate 2 and the printing substrate 3, the bottom plate 2 is provided with a buckle 202; the printing substrate 3 is provided with a buckle groove 302 matched with the buckle 202; the buckle 202 and the buckle groove 302 are detachably connected. The number and installation position of the buckle 202 and the buckle groove 302 are designed according to the actual size of the printing substrate 3 and the bottom plate 2.

[0031] Further, the bottom plate 2 is provided with a magnetic attraction piece 203; the bottom of the printing substrate 3 is provided with an adapter plate 303; the magnetic attraction piece 203 and the adapter plate 303 are magnetically connected. The bottom plate 2 can firmly fix the adapter plate 303 through the magnetic attraction piece 203. When the adapter plate 303 needs to be removed, only the magnetic force needs to be released, and the adapter plate 303 together with the printing substrate 3 can be easily removed, which is convenient and fast, and promotes the automation to be more intelligent. Preferably, an electromagnetic attraction piece 203 is arranged at the top of the bottom plate 2, which is equipped with a controllable magnetic attraction function. The adapter plate 303 is a carbon steel adapter plate 303 or a magnetic attraction adapter plate 303 made of other materials that meet the magnetic attraction requirements. The adapter plate 303 is generally fixed at the middle position of the bottom of the printing substrate 3, which is beneficial to the adsorption of the magnetic attraction piece 203 on the bottom plate 2, so that the printing substrate 3 made of various materials can be magnetically fixed with the bottom plate 2 through the adapter plate 303.

[0032] The detachable connection mode of the printing substrate 3 and the bottom plate 2 in the above embodiment makes the back of the printing substrate 3 connected with the bottom plate 2, and the front printing surface has no screw hole, which is beneficial to disassembly and improves the utilization rate of the printing surface. The printing table can adopt a combination form of various detachable connection modes. By being equipped with a controllable magnetic attraction function and a controllable mortise and tenon structure, magnetic attraction and mechanical double fixation are realized, the stable combination of the printing Z-axis and the cylinder bottom plate 2 is ensured, the substrate and the bottom plate 2 are accurately fixed, and automatic disassembly of the two is facilitated. The above detachable connection mechanism can be quickly assembled and disassembled through automation.

[0033] In a refined embodiment, a mechanical arm clamping groove 304 is arranged on the side arm of the printing substrate 3. When the adapter plate 303 is arranged at the bottom of the printing substrate 3, the mechanical arm clamping groove 304 can be arranged on the side arm of the adapter plate 303. After printing is completed, the mechanical arm clamping groove 304 on the side of the mechanical arm clamping groove 304 grasps the printing substrate 3, and then the connection between the printing substrate 3 and the bottom plate 2 is released, and 360-degree powder cleaning is started. The groove can facilitate substrate transfer and mechanical clamping.

[0034] In order to prevent the temperature of the bottom of the model from decreasing during printing, the edge of the model and the printing platform from being warped, and even the entire model from falling off, a heater for heating the printing substrate 3 is arranged on the bottom plate 2 to continuously heat the model.

[0035] Further, the bottom of the bottom plate 2 is provided with a connecting piece for interfacing with the printer control device. After the forming cylinder and the printing device of the printer are installed in place, the connecting piece is precisely and quickly interfaced with the printer control device, and the printer control device is used to automatically adjust the level of the printing substrate 3 by distance ranging, so as to ensure that the level is within ±0.05mm. When the substrate is provided with a magnetic attraction piece 203, a heater or other functional structure, the interfaced printer control device starts to control the overall substrate to be heated, and the magnetic attraction and height position are used to cooperate with the equipment printing.

[0036] In an optimized embodiment, the replaceable printing substrate forming cylinder further comprises a cylinder cover 5, which is detachably connected to the top of the forming cylinder body 1. Preferably, the top of the forming cylinder body 1 is provided with a cylinder cover positioning groove, which facilitates the placement of the cylinder cover 5 after printing to limit and seal the cylinder body, preventing powder overflow during transportation.

[0037] Further, the top of the forming cylinder body 1 is also provided with a printing device positioning hole, which is interfaced with the printing device through the positioning hole to ensure that the forming cylinder is in place.

[0038] In order to facilitate the transportation of the forming cylinder, the outer part of the forming cylinder body 1 is provided with side arms for clamping and carrying. Optionally, referring to Figure 6 , the upper and lower ends of the outer side wall of the forming cylinder body 1 are respectively provided with upper side arms 101 and lower side arms 102. The upper side arms 101 facilitate external carrying and clamping operation, and the lower side arms 102 are used for positioning before the forming cylinder body 1 and the equipment are interfaced.

[0039] Further, the printing table is matched with the inner cavity of the forming cylinder body 1, and a sealing ring 4 is sleeved on the peripheral surface of the printing table in contact with the inner wall of the forming cylinder body 1. Preferably, the sealing ring 4 is sleeved on the peripheral surface of the bottom plate 2 in contact with the inner wall of the forming cylinder body 1. The sealing ring 4 realizes the sealing of the entire cylinder body on the one hand, and ensures that the powder does not overflow on the other hand.

[0040] Embodiment one:

[0041] The embodiment provides a replaceable printing substrate forming cylinder, which comprises a cylinder cover 5, a forming cylinder body 1 and a printing table.

[0042] The top and bottom of the forming cylinder body 1 are both provided with openings, and the inside forms a through cavity for accommodating the printing table. The top opening edge of the forming cylinder body 1 is provided with a cylinder cover positioning groove and a printing device positioning hole. The upper and lower ends of the outer side wall of the forming cylinder body 1 are respectively provided with upper side arms 101 and lower side arms 102.

[0043] The printing table comprises a bottom plate 2 and a printing substrate 3, the size of which is matched with the inner cavity of the forming cylinder body 1.

[0044] The bottom plate 2 is provided with a buckle 202 on each of the left and right sides of the top, and the top surface is provided with two T-shaped convex strips parallel to the left and right sides, and the two T-shaped convex strips are symmetrically arranged. An electromagnetic suction member 203 and a heater are arranged between the two T-shaped convex strips, and four connecting members for connecting the electromagnetic suction member 203 and the heater with an external printer control device are symmetrically arranged at the four corners of the bottom of the bottom plate 2. The circumferential surface of the bottom plate 2 in contact with the inner wall of the forming cylinder body 1 is provided with three sealing rings 4 of different materials.

[0045] The top surface of the printing substrate 3 is a printing surface without screw holes, the bottom surface is provided with two T-shaped grooves corresponding to the T-shaped convex strips, and the left and right sides are provided with clamping grooves 302 corresponding to the buckles 202 on the bottom plate 2. A carbon steel adapter plate 303 is embedded at the position corresponding to the electromagnetic suction member 203 on the bottom surface of the printing substrate 3; a mechanical arm clamping groove 304 is arranged on the side surface of the printing substrate 3.

[0046] Before use, first insert the T-shaped convex strips of the bottom plate 2 into the T-shaped grooves of the printing substrate 3 from the side, and then clamp the buckles 202 on the left and right sides into the corresponding clamping grooves 302 after the two are embedded in place, complete the assembly of the printing substrate 3 and the bottom plate 2, and form a printing platform. Install the printing platform into the forming cylinder body 1, the circumferential surface of the bottom plate 2 is tightly attached to the inner wall of the forming cylinder body 1 through the sealing ring 4, the cylinder cover 5 is installed on the top of the forming cylinder body 1, and the assembly of the forming cylinder is completed.

[0047] When in use, the upper arm 101 of the outer side wall of the forming cylinder body 1 clamps and carries the forming cylinder to the streamline, and the streamline carries the forming cylinder to the printing position, and the lower arm 102 is positioned with the air cylinder and shaft of the equipment. Open the cylinder cover 5, lift the forming cylinder through the lifting cylinder arranged below, the printing equipment positioning hole at the top of the forming cylinder body 1 is connected with the equipment, and the forming cylinder is guaranteed to be in place. The connecting members at the four corners of the bottom of the bottom plate 2 are connected with the printer control device, the horizontality of the printing substrate 3 is automatically adjusted through distance measurement, and the horizontality is guaranteed to be within ±0.05mm. The connected printer control device starts to control the electromagnetic suction member 203 and the heater, adsorbs the carbon steel adapter plate 303, and warms the printing substrate 3, adjusts the height position of the printing platform in the forming cylinder body 1 to cooperate with the equipment printing.

[0048] After printing is completed, the forming cylinder device is lowered as a whole, the cylinder cover 5 is connected and installed through the cylinder cover positioning groove, and the powder is prevented from overflowing during transportation. The streamline carries out the forming cylinder device that has completed printing, and a new forming cylinder ready for use is directly used to start a new round of printing.

[0049] The formed cylinder which has completed printing is transported to a powder cleaning machine. The lifting end of the lifting cylinder penetrates into the formed cylinder body 1 through the opening at the bottom of the formed cylinder body 1 and contacts the bottom of the bottom plate 2. The whole printing platform is pushed to slide upward in the formed cylinder body 1 until the printed part leaves the formed cylinder body 1. During the upward movement, most of the powder will flow out of the cylinder body under the action of gravity. The magnetic force of the electromagnetic suction part 203 is released, the buckle 202 is disconnected from the clamping groove 302, the mechanical arm grabs the mechanical arm clamping groove 304 at the side edge of the printing substrate 3, the printing substrate 3 is pulled out from the side edge, the connection between the printing substrate 3 and the bottom plate 2 is released, and the powder cleaning in 360 degrees is started.

[0050] The above examples are only illustrative of the present application and do not constitute a limitation on the protection scope of the present application. Any design identical or similar to the present application belongs to the protection scope of the present application.

Claims

1. A forming cylinder of a replaceable print substrate, characterized by: Including a forming cylinder body (1) and a printing platform; the printing platform is in sliding sealing connection with the inner wall of the forming cylinder body (1); the printing platform comprises a bottom plate (2) and a printing substrate (3); the printing substrate (3) is detachably installed on the bottom plate (2).

2. The forming cylinder of claim 1, wherein: The bottom plate (2) is provided with a limiting protrusion (201); the printing substrate (3) is provided with a limiting groove (301) matched with the limiting protrusion (201); the printing substrate (3) is detachably installed on the top of the bottom plate (2) through the limiting protrusion (201) and the limiting groove (301).

3. The replaceable print substrate forming cylinder of claim 2, wherein: The bottom plate (2) is provided with a buckle (202); the printing substrate (3) is provided with a clamping groove (302) matched with the buckle (202); the buckle (202) and the clamping groove (302) are detachably connected.

4. The replaceable print substrate forming cylinder of claim 1, wherein: The bottom plate (2) is provided with a magnetic attraction piece (203); the bottom of the printing substrate (3) is provided with an adapter plate (303); the magnetic attraction piece (203) and the adapter plate (303) are magnetically connected.

5. The forming cylinder of claim 4 wherein: The side arm of the printing substrate (3) is provided with a mechanical arm clamping groove (304).

6. The forming cylinder of claim 1 wherein: The bottom plate (2) is provided with a heater for heating the printing substrate (3).

7. The forming cylinder of claim 1 wherein: The bottom of the bottom plate (2) is provided with a connecting piece for interfacing with a printer control device.

8. The forming cylinder of claim 1 wherein: It also includes a cylinder cover (5); the cylinder cover (5) is detachably connected to the top of the forming cylinder body (1).

9. The forming cylinder of claim 1 wherein: The outside of the forming cylinder body (1) is provided with a side arm for clamping and carrying.

10. The forming cylinder of claim 1 wherein: The printing platform is matched with the inner cavity of the forming cylinder body (1), and the peripheral surface of the printing platform in contact with the inner wall of the forming cylinder body (1) is provided with a sealing ring (4).

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