Laser scald prevention random stop block device

Abstract

The invention belongs to the technical field of post-treatment of injection products, and particularly relates to a laser scald prevention random stop block device which comprises a sliding table air cylinder, an elastic floating assembly, an elastic floating assembly and a stop block body, one side of the stop block body is provided with a binding face matched with the outline of a product, and the upper surface of the stop block body is subjected to mirror polishing treatment; the upper surface of the stop block body is provided with a reflecting face extending towards the attaching face, the stop block body is adjustably installed on the stop block fixing base, the stop block fixing base can drive the stop block body to telescopically move in the direction close to or away from a product under the action of the sliding table air cylinder, and the elastic floating assembly is arranged between the stop block fixing base and the sliding table air cylinder. The buffering device is used for providing buffering space when the stop block body makes contact with a product. The stop block body can be used for shielding a laser path, so that other structures of a product are prevented from being scalded by laser; and a heat source can be dispersed by utilizing a reflection principle, so that the product is further prevented from being scalded, and the service life of the stop block body can be prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of post-processing of injection molded products, and particularly relates to a laser burn prevention type blocking device. BACKGROUND

[0002] At present, laser cutting of a sprue is widely used in cutting of a sprue of a plastic part. The laser cannot be blocked by other structures during cutting of the sprue, otherwise the blocking structure will be cut off by the laser to produce unqualified products. Secondly, due to the product structure, the sprue is set on the appearance surface of the product. During laser fiber cutting, the distance between the laser and the appearance surface of the product is less than 0.2 mm, which causes the appearance surface of the product to be burned. The body of the vehicle lamp plastic part is black. When the laser is close, the heat is absorbed by the body, and the product is burned. In addition, the plastic part itself has a certain deformation, which increases the risk of part burn.

[0003] In order to overcome the above situation, the first thing to do is to solve the burn solution, that is, to make an effective laser path blocking mechanism. The mechanism tries various schemes, but it is still impossible to completely isolate the burn situation. Typical is two kinds of schemes: the first is to process a 2mm steel sheet to make a blocking piece, and the surface is bent into an arc shape. It is found that the thickness of the bent steel sheet is too thick, and the angle between the bent part and the part is formed. The laser passes through the angle and burns the product. The second scheme is to directly make a 2mm steel sheet into a straight shape, and the surface is blackened to absorb the heat of the laser. It is found that the temperature of the black steel sheet rises, and the product is still burned. Finally, it is found through verification that the use of a thin steel sheet to make a blocking piece into a reflective surface form, after the laser is emitted, the reflective surface of the thin steel sheet reflects it, effectively blocks the laser, and avoids burning. However, the thin steel sheet has the following problems:

[0004] 1) Insufficient service life. This is the biggest defect of the thin steel sheet shielding scheme. Normal daily production capacity is 1600 parts, and the service life of 1000 times leads to replacement of the steel sheet every shift in the factory;

[0005] 2) Difficult to debug. The steel sheet installation must be completely attached to the product. The thin steel sheet is difficult to install and debug after being made. Debugging for half an hour directly leads to 18 parts accumulated on the production line. In addition, the burn produced during the debugging process seriously affects the factory production capacity;

[0006] 3) High requirement for personnel operation proficiency. The scheme has too high a requirement for the placement state of the part. The operator must practice repeatedly on the production line for several days to improve the qualified rate. Once the personnel change, batch product defects are easily produced;

[0007] 4) Thin steel sheet needs to be made into spare parts. Frequent replacement requires the production of certain spare parts to shorten the replacement cycle. SUMMARY

[0008] The purpose of the present invention is to solve the defects and shortcomings in the prior art and provide a laser burn-proof conformable stopper device.

[0009] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a laser burn-proof stopper device, comprising:

[0010] A block body, one side of which is configured as a fitting surface that conforms to the product contour, an upper surface of which is mirror-polished and has a reflective surface extending toward the fitting surface, the reflective surface forming a 15° reflection angle;

[0011] A stopper fixing seat, on which the stopper body is adjustably mounted, and which can drive the stopper body to telescopically move toward or away from the product under the action of the slide cylinder;

[0012] An elastic floating component is arranged between the stopper fixing seat and the slide cylinder, and is used to provide a buffer space when the stopper body contacts the product.

[0013] Preferably, the block body is made of metal.

[0014] Preferably, the thickness of the bonding surface is 1 mm.

[0015] Preferably, the stopper fixing seat is provided with an adjusting screw for adjusting the stopper body.

[0016] Preferably, the block body is provided with a waist-shaped hole corresponding to the connecting hole on the block fixing seat, and a locking screw for locking and fixing the waist-shaped hole and the connecting hole.

[0017] Preferably, the telescopic stroke of the slide cylinder is 80 mm.

[0018] Preferably, the elastic floating assembly includes a connecting block, one end of the connecting block is connected to the slide cylinder, and the other end is connected to the stop block fixing seat through a guide shaft, one end of the guide shaft is connected to the stop block fixing seat, and the other end is connected to the linear bearing, and a spring is sleeved on the guide shaft between the connecting block and the stop block fixing seat.

[0019] Preferably, the linear bearing is arranged on the connecting block, and a screw is provided at one end of the linear bearing away from the guide shaft.

[0020] After adopting the above technical solution, the laser burn prevention and scalding stopper device provided by the present invention has the following beneficial effects:

[0021] 1) The present invention manufactures a metal block body and, through the telescopic action of the slide cylinder, can block the laser light, allowing the laser light to hit the block body, ensuring that the laser light does not cut the product;

[0022] 2) The present invention processes a laser reflective surface on the upper surface of the block body and polishes it to form a mirror surface. After the laser passes through this surface, it is reflected away from the product, thus solving the problem of the laser generating high temperature on the surface of the part and scalding the product. At the same time, the heat does not stay on the surface of the block body and will not burn the surface of the block body, thereby improving the service life of the block body.

[0023] 3) The present invention manufactures a custom-shaped stopper body, theoretically ensuring that the shape of the stopper is consistent with the product appearance, so that it can accurately fit the product after installation. Furthermore, two sets of positioning adjustment screws are installed on the rear side of the stopper body, and the mounting hole of the stopper body is formed into a waist-shaped hole, which reserves a certain amount of angle adjustment space for the stopper body, ensuring that a qualified stopper body can also meet the precise fitting requirements during installation.

[0024] 4) The present invention, through the provision of an elastic floating component, can avoid hard contact between the block body and the product and damage to the product surface, and can also eliminate some part differences, further improving the adaptability of the block body to the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of a laser burn prevention stopper device according to the present invention in use;

[0026] Figure 2 It is a structural schematic diagram of the elastic floating component part of the present invention;

[0027] Figure 3 It is a structural diagram of the stopper fixing seat part of the present invention;

[0028] Figure 4 Schematic diagram of the structure of the block body in the present invention;

[0029] Figure 5 It is a side view of the block body in the present invention.

[0030] Among them: slide cylinder 1, elastic floating component 2, reflective surface 3, screw 4, linear bearing 5, connecting block 6, guide shaft 7, spring 8, stopper fixing seat 9, stopper body 10, adjusting screw 11, locking screw 12. DETAILED DESCRIPTION

[0031] The present invention will be further described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments described are only some, not all, of the embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention, its application, or use. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0034] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] like Figure 1-5 As shown, the present invention provides a laser burn prevention conformable stopper device, which includes a slide cylinder 1, an elastic floating component 2, an elastic floating component 9 and a stopper body 10.

[0038] The block body 10 is made of metal, and one side of the block body 10 is configured as a fitting surface, which is adapted to the contour of the product. In order to ensure that the fitting surface does not contact the product with sharp corners and scratch the product when fitting with the product, the fitting surface is designed with a thickness of 1 mm to achieve surface contact with the product. The upper surface of the block body 10 is mirror polished, and the upper surface of the block body 10 has a reflecting surface 3 extending toward the fitting surface, and the reflecting surface 3 forms a reflection angle of 15°. On the one hand, the reflection angle of 15° can guide the laser to the other side after it is irradiated to the surface, dissipating part of the heat source; on the other hand, the surface mirror polishing can ensure the effect of laser reflection, ensure that the heat does not stay on the surface of the block body, and will not burn the surface of the block body, thereby improving the service life of the block body.

[0039] The block body 10 is adjustably mounted on the block fixing seat 9, and the block fixing seat 9 can drive the block body 10 to move telescopically towards or away from the product under the action of the slide cylinder 1. Specifically, the telescopic stroke of the slide cylinder 1 is 80 mm, and the sufficient avoidance stroke can ensure that the product is placed on the tooling and positioned without damaging the product. The block fixing seat 9 is provided with an adjusting screw 11 for adjusting the block body 10, and the block body 10 is provided with a waist-shaped hole corresponding to the connecting hole on the block fixing seat 9, and a locking screw 12 for locking and fixing the waist-shaped hole and the connecting hole. In this way, the state of the block body 10 can be adjusted in time by adjusting the screw 11, and when the plastic product is deformed or has a certain size difference, it can be adjusted quickly and in time, which also provides a benchmark for debugging work.

[0040] The elastic floating component 2 is arranged between the block fixing seat 9 and the slide cylinder 1, and is used to provide a buffer space for the block body 10 when it contacts the product. Specifically, the elastic floating component 2 includes a connecting block 6, one end of the connecting block 6 is connected to the slide cylinder 1, and the other end is connected to the block fixing seat 9 through a guide shaft 7, one end of the guide shaft 7 is connected to the block fixing seat 9, and the other end is connected to the linear bearing 5, and a spring 8 is sleeved on the guide shaft 7 between the connecting block 6 and the block fixing seat 9, the linear bearing 5 is arranged on the connecting block 6, and a screw 4 is provided on the end of the linear bearing 5 away from the guide shaft 7, so that the block body 10 can have a 1mm buffer after moving into place, absorb the impact of the slide cylinder 1 movement on the product, and avoid damaging the product surface.

[0041] The working process of the laser burn prevention type stopper device provided by the present invention is as follows:

[0042] Before production, the slide cylinder 1 is in the retracted state, with a cylinder stroke of 80mm. This is enough to avoid the product from being damaged when it is placed on the tooling. The slide cylinder 1 receives the signal and performs the ejection movement, driving the block body 10 to accurately fit the product. The spring 8, linear bearing 5, and guide shaft 7 in the elastic floating component 2 can absorb some of the parts' errors. At the same time, it can provide a certain buffer during the contact process between the block body 10 and the product, preventing direct collision with the product and causing damage to the product surface.

[0043] In addition, when the process adjustment of the plastic product is completed and the product defects are verified, the injection molded product will have a certain size fluctuation. At this time, the position and state of the stopper body 10 can be adjusted by the adjusting screw 11 on the stopper fixing seat 9, so that the stopper body 10 adapts to the new product part size. Because the fitting surface of the stopper body 10 is copied according to the product outline, the stopper body 10 and the product outline are highly matched. The head of the stopper body 10 is designed with a 1mm fitting surface, so that when the stopper body 10 contacts the product with the ejection action of the slide cylinder 1, it finally contacts with the surface instead of the line, reducing the risk of damaging the product during the fitting process.

[0044] At this time, a signal is sent to the laser equipment to start cutting the gate. During the cutting process, when the laser is irradiated on the surface of the block body 10, mirror reflection will occur, so that the heat will not accumulate on the surface of the product and be absorbed, avoiding the situation of scalding the product. After the gate cutting is completed, it enters the gate collection box through the blanking port, and the laser cutting process of the entire gate can be completed.

[0045] To sum up, the present invention provides a laser-proof conformable block device, which, on the one hand, can use the block body to block the laser path to prevent the laser from burning other structures of the product; on the other hand, it can use the reflection principle to disperse part of the heat source. When the cutting requirements are too high and the laser needs to be cut close to the product, it can ensure that there is a small residue after the gate is cut, and the product will not be burned. At the same time, it can also extend the service life of the block body.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A laser burn prevention type stopper device, characterized in that: include: A block body (10), one side of the block body (10) is configured as a fitting surface, the fitting surface is adapted to the product profile, the upper surface of the block body (10) is mirror-polished, and the upper surface of the block body (10) has a reflective surface (3) extending toward the fitting surface, the reflective surface (3) forming a reflection angle of 15°; A stopper fixing seat (9), wherein the stopper body (10) is adjustably mounted on the stopper fixing seat (9), and the stopper fixing seat (9) can drive the stopper body (10) to move telescopically in a direction close to or away from the product under the action of the slide cylinder (1); An elastic floating component (2) is arranged between the stopper fixing seat (9) and the slide cylinder (1) and is used to provide a buffer space when the stopper body (10) contacts the product.

2. The laser burn prevention stopper device according to claim 1, characterized in that: The block body (10) is made of metal.

3. The laser burn prevention conformable stopper device according to claim 1, characterized in that: The thickness of the bonding surface is 1 mm.

4. The laser burn prevention conformable stopper device according to claim 1, characterized in that: The stopper fixing seat (9) is provided with an adjusting screw (11) for adjusting the stopper body (10).

5. The laser burn prevention stopper device according to claim 1, characterized in that: The block body (10) is provided with a waist-shaped hole corresponding to the connection hole on the block fixing seat (9), and a locking screw (12) for locking and fixing the waist-shaped hole and the connection hole.

6. The laser burn prevention conformable stopper device according to claim 1, characterized in that: The telescopic stroke of the slide cylinder (1) is 80 mm.

7. The laser burn prevention conformable stopper device according to claim 1, characterized in that: The elastic floating assembly (2) includes a connecting block (6), one end of the connecting block (6) is connected to the slide cylinder (1), and the other end is connected to the block fixing seat (9) through a guide shaft (7), one end of the guide shaft (7) is connected to the block fixing seat (9), and the other end is connected to the linear bearing (5), and a spring (8) is sleeved on the guide shaft (7) between the connecting block (6) and the block fixing seat (9).

8. The laser burn prevention conformable stopper device according to claim 7, characterized in that: The linear bearing (5) is arranged on the connecting block (6), and a screw (4) is provided at one end of the linear bearing (5) away from the guide shaft (7).

Images