Sunken light-curing printer pick-up mechanism

Abstract

To solve the problems of the prior art, the utility model provides a kind of sinking light-cured printer take-out mechanism, comprising: printing substrate, top open take-out groove;The needle plate is equipped in the take-out groove, and the needle plate is arranged with several thimble, and the thimble is arranged to be set to the upper needle. Several thimble holes are opened on the printing substrate, and the number and position of the thimble hole cover at least the thimble. The utility model takes the way of dense thimble to take out the printing component from the printing substrate, and the stress distribution is uniform and extensive, so that the printing component is almost not damaged in the process of taking out, effectively overcome the problem that the existing spade type take-out may damage the printing component.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing equipment technology, specifically relating to a part-retrieving mechanism for a sunken photopolymer printer. Background Technology

[0002] A photopolymer printer is a 3D printing device based on photopolymerization technology (SLA / DLP / LCD). Photopolymer printers include bottom-mounted printers and top-mounted printers. Bottom-mounted printers use a top-down printing method and require a larger amount of resin. However, because the printing substrate is located below the printed part, the viscosity requirement between the resin and the printing substrate is lower, allowing for a wider range of resins to be used, making them suitable for industrial-grade printing. Currently, bottom-mounted printers commonly suffer from the following problems:

[0003] In existing printers, a scraper is typically used to remove the printed part from the printing substrate after printing. Because different resins have varying adhesion to the printing substrate, and current equipment usually uses a fixed mechanical force for scraping, lower viscosity resins are prone to detaching or flying the printed part, leading to collision damage. Higher viscosity resins are continuously subjected to the scraper force, sometimes causing stress damage at the stress point, and sometimes the printed part is ejected due to internal stress and elastic force at the moment of release, resulting in damage. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by providing a recessed photopolymer printer part-retrieving mechanism, comprising: a printing substrate and a part-retrieving slot with an open top; a needle plate is provided in the part-retrieving slot, and a number of pins with their tips facing upwards are arranged on the needle plate.

[0005] The printing substrate has several ejector pin holes, and the number and position of the ejector pin holes at least cover the ejector pins.

[0006] Furthermore, the bottom of the part-taking slot is an inclined surface facing the resin tank, and the side facing the resin tank is open; a needle plate support block is provided at the bottom of the part-taking slot; the needle plate is placed above the support block and supported in a horizontal state.

[0007] Furthermore, the inside of the part-retrieving slot is divided into a part-retrieving cavity and a component cavity by a partition. The support block is set on the bottom surface of the part-retrieving cavity, and the needle plate is placed in the part-retrieving cavity. The position and size of the component cavity are matched with the mechanism that drives the printing substrate to move. The bottom of the component cavity is an inclined surface facing the resin tank, and the side facing the resin tank is open.

[0008] Furthermore, the partition plate has a groove at the location where the mechanism that drives the displacement of the printing substrate is connected to the component of the printing substrate, which matches the connecting component.

[0009] Furthermore, the part-taking slot has a barrier around the needle plate that extends beyond the top of the ejector pin, and the area enclosed by the barrier matches the printing substrate.

[0010] The advantages of this invention are as follows: This invention uses dense ejector pins to lift the printed component away from the printing substrate for component removal. The force distribution is uniform and wide, so the printed component is almost not damaged during the removal process, effectively overcoming the problem of potential damage to the printed component in existing shovel-type component removal. Attached Figure Description

[0011] Figure 1 The figure shown is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 The diagram shown is a schematic diagram of the printing substrate of this utility model.

[0013] Figure 3 The diagram shown is a structural schematic of the part-taking groove and needle plate of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] Please note that the terms "above", "below", "left", "right", "top", "bottom", "end", "full", etc. used in this utility model to describe positional relationships do not represent the absolute positional relationship between modules / components / assemblies / parts / components, but rather the relative positional relationship between modules / components / assemblies / parts / components.

[0016] Example 1

[0017] A recessed photopolymer printer part-retrieving mechanism, such as Figure 1-3 As shown, it includes: a printing substrate 3 and a top-opening pick-up slot 2; the pick-up slot 2 is provided with a needle plate 1, and several pins 101 with their tips facing upwards are arranged on the needle plate 1.

[0018] The printing substrate 3 has several ejector pin holes 301, and the number and position of the ejector pin holes 301 at least cover the ejector pin 101.

[0019] At this time, by controlling the printing substrate 3 to move above the needle plate 1 of the part taking slot 2, the ejector pin 101 is aligned with the ejector pin hole 301 of the printing substrate 3.

[0020] After the ejector pin 101 is aligned with the ejector pin hole 301, the mechanism 5 that drives the printing substrate 3 to move downwards until the top of the ejector pin 101 passes through the ejector pin hole 301 and pushes the printing component away from the printing substrate 3, thereby completing the pre-removal.

[0021] This part removal method uses dense ejector pins to push the printed component away from the printing substrate 3. The force distribution is uniform and wide, so the printed component is almost not damaged during the part removal process, effectively overcoming the problem of potential damage to the printed component that exists in the existing shovel-type part removal method.

[0022] Example 2

[0023] Based on the component retrieval mechanism of the sunken photopolymer printer in Embodiment 1, such as Figure 1 and 3 As shown, the bottom of the part-taking groove 2 is an inclined surface facing the resin tank 4, and the side facing the resin tank 4 is open; the bottom of the part-taking groove 2 is provided with a needle plate support block 204; the needle plate 1 is placed above the support block 204 and supported in a horizontal state.

[0024] At this time, when the printing substrate 3 moves to the needle plate 1 and performs the picking action, the resin adhering to the printing substrate 3 will flow along the pin hole 301 to the bottom slope of the picking groove 2, and further flow along the bottom slope of the picking groove 2 to the top of the opening of the resin tank 4, and finally flow back into the resin tank 4, realizing the recycling and reuse of the resin liquid.

[0025] Existing technologies use a scraper to remove parts, which is a slow process. This affects overall printing efficiency and makes it difficult to recycle and reuse the residual resin before it has solidified, resulting in a high resin waste rate and increased printing and waste disposal costs.

[0026] Example 3

[0027] Based on the component retrieval mechanism of the sunken photopolymer printer in Embodiment 1, such as Figure 1 and 3 As shown, the inside of the part-taking slot 2 is divided into a part-taking cavity and a component cavity by a partition 201. The support block 204 is set on the bottom surface of the part-taking cavity, and the needle plate 1 is placed in the part-taking cavity. The position and size of the component cavity are matched with the mechanism 5 that drives the printing substrate 3 to move. The bottom of the component cavity is an inclined surface facing the resin tank 4, and the side facing the resin tank 4 is open.

[0028] The partition 201 has a groove 202 that matches the connecting component at the position where the mechanism 5 that drives the printing substrate 3 to move is connected to the printing substrate 3.

[0029] During the printing process, the mechanism 5 that moves the printing substrate 3 inevitably adheres resin to the connecting members that connect the printing substrate 3. By setting the partition 201, it is possible to complete the picking and recycling of residual resin on the printing substrate 3 in the picking cavity, and to complete the recycling of residual resin on the connecting members that connect the printing substrate 3 in the component cavity, thereby enabling the residual resin to be recycled and reused as much as possible and improving the resin utilization rate.

[0030] Example 4

[0031] Based on the component retrieval mechanism of the sunken photopolymer printer in Embodiment 1, such as Figure 3 As shown, the part-retrieving slot 2 has a surrounding barrier 203 extending beyond the top of the ejector pin 101 around the needle plate 1, and the area enclosed by the barrier 203 matches the printing substrate 3. This arrangement can assist in fixing and positioning the printing substrate 3 during part retrieval.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A component-retrieving mechanism for a recessed photopolymer printer, characterized in that, include: Printing substrate (3), top open pick-up slot (2); the pick-up slot (2) is provided with a needle plate (1), and a number of pins (101) with their tips facing upwards are arranged on the needle plate (1). The printing substrate (3) has a number of ejector pin holes (301), and the number and position of the ejector pin holes (301) at least cover the ejector pin (101). The bottom of the take-up slot (2) is an inclined surface facing the resin tank (4), and the side facing the resin tank (4) is open; the bottom of the take-up slot (2) is provided with a needle plate support block (204); the needle plate (1) is placed above the support block (204) and supported in a horizontal state; The inside of the take-up slot (2) is divided into a take-up cavity and a component cavity by a partition (201). The support block (204) is set on the bottom surface of the take-up cavity and the needle plate (1) is placed in the take-up cavity. The position and size of the component cavity match the mechanism (5) that drives the printing substrate (3) to move. The bottom of the component cavity is an inclined surface facing the resin tank (4) and the side facing the resin tank (4) is open.

2. The component-retrieving mechanism for a recessed photopolymer printer according to claim 1, characterized in that, The partition (201) has a groove (202) that matches the connecting component at the position where the mechanism (5) that drives the printing substrate (3) to move is connected to the printing substrate (3).

3. The component-retrieving mechanism for a recessed photopolymer printer according to claim 1, characterized in that, The pick-up slot (2) has a barrier (203) around the needle plate (1) that extends beyond the top of the ejector pin (101), and the area enclosed by the barrier (203) matches the printing substrate (3).

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