Paint spraying jig and paint spraying tool

Abstract

This application discloses a painting fixture and a painting tooling, relating to the field of fixture technology. The painting fixture includes a support member, a first end of which is detachably connected to a secondary fixture, and a second end of which is detachably connected to a car bumper. The support member is conductive or antistatic. This painting fixture can solve the problems of insufficient paint at the support edge and uneven aluminum powder distribution at the bumper painting process caused by electrostatic adsorption at the support position of existing secondary fixtures.

Description

Technical Field

[0001] This application relates to the field of fixture technology, and more specifically, to a paint spraying fixture and paint spraying tooling. Background Technology

[0002] With the continued expansion of the automobile consumer market, the auto parts industry has entered a period of rapid growth. As a key tooling to ensure the precision of the front and rear bumper painting process, the secondary fixture plays an important role in the production process. However, the existing secondary fixtures, made of carbon steel, have significant technical bottlenecks in the bumper painting process: due to the electrostatic adsorption effect, the paint easily adheres to the surface of the secondary fixture, resulting in quality defects such as insufficient paint at the edges of the support and uneven distribution of aluminum powder. Utility Model Content

[0003] The purpose of this application is to provide a painting fixture and a painting tooling that can solve the problems of insufficient paint and uneven aluminum powder distribution at the edge of the support position during the bumper painting process caused by the electrostatic adsorption effect of the support position of the existing secondary fixture.

[0004] The embodiments of this application are implemented as follows:

[0005] A first aspect of this application provides a paint spraying fixture, including a support member. A first end of the support member is detachably connected to a secondary fixture, and a second end of the support member is detachably connected to a car bumper. The support member is conductive or antistatic. This paint spraying fixture can solve problems such as insufficient paint at the support edge and uneven aluminum powder distribution at the bumper spraying process caused by electrostatic adsorption at the support position of existing secondary fixtures.

[0006] In one possible implementation, the secondary fixture is provided with a first mounting portion, and the first end of the support member has a second mounting portion. The second mounting portion cooperates with the first mounting portion so that the first end of the support member is mounted on the secondary fixture.

[0007] In one possible implementation, the first mounting part is a slot, and the second mounting part is a buckle adapted to the slot, wherein the buckle is engaged in the slot; or, the first mounting part is a buckle, and the second mounting part is a slot adapted to the buckle, wherein the buckle is engaged in the slot.

[0008] In one possible implementation, the number of the buckles is two, and the two buckles are arranged opposite each other and spaced apart. When the two buckles are close to each other, the two buckles can extend into the slot. When the two buckles are far apart, the two buckles can be locked in the slot.

[0009] As one possible implementation, both of the latches are elastic. When the two latches approach each other, they deform and store energy. When the two latches extend into the slot, they release energy to move away from each other.

[0010] In one possible implementation, the support member includes a main body located between the first end and the second end, and the buckle includes a snap-fit ​​section and a limiting section that are sequentially arranged and connected to each other from the second end to the first end. The snap-fit ​​section snaps into the slot, and the main body and the limiting section abut against two opposite side walls of the slot.

[0011] As one possible implementation, along the second end to the first end, the distance between the snap-fit ​​segments of the two snaps gradually increases, and the maximum distance between the snap-fit ​​segments of the two snaps is less than the distance between the limiting segments of the two snaps, so as to form an abutment platform between the snap-fit ​​segments and the limiting segments.

[0012] As one possible implementation, the buckle further includes a guide section disposed on the side of the limiting segment away from the locking segment and connected to the limiting segment. Along the second end to the first end, the distance between the guide sections of the two buckles gradually decreases, and the maximum distance between the guide sections of the two buckles is equal to the distance between the limiting segments of the two buckles.

[0013] In one possible implementation, the second end of the support member has a third mounting portion, which is used to cooperate with a fourth mounting portion on the car bumper so that the third end of the support member is connected to the car bumper.

[0014] A second aspect of this application provides a painting fixture, including a secondary fixture and the aforementioned painting fixture, wherein the secondary fixture and the painting fixture are detachably connected. This painting fixture can solve the problems of insufficient paint at the support edge and uneven aluminum powder distribution at the support position caused by electrostatic adsorption effect during the bumper painting process in existing secondary fixtures.

[0015] The beneficial effects of the embodiments of this application include:

[0016] The paint spraying fixture includes a support member. The first end of the support member is detachably connected to a secondary fixture, and the second end is detachably connected to a car bumper. The support member is conductive or antistatic. The paint spraying fixture provided in this application, by employing a detachable connection design at both ends of the support member, allows for quick assembly and disassembly between the support member and both the secondary fixture and the car bumper, facilitating use and replacement. Furthermore, the conductive support member quickly conducts away surface charges (e.g., through a grounding device), preventing charge accumulation and the formation of an electrostatic field. Alternatively, the antistatic support member ensures that, without electrostatic adsorption, paint particles are uniformly adhered to the surface of the car bumper under spraying pressure and gravity, without being attracted to the support member by electrostatic adsorption, thus guaranteeing paint coverage and uniform aluminum powder distribution at the support edge. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is one of the structural schematic diagrams of the support member provided in the embodiments of this application;

[0019] Figure 2 This is a second schematic diagram of the structure of the support member provided in the embodiments of this application;

[0020] Figure 3 This is the third structural schematic diagram of the support member provided in the embodiments of this application;

[0021] Figure 4 The fourth schematic diagram of the support structure provided in the embodiments of this application.

[0022] Icons: 100-Support component; 10-First end; 20-Second end; 30-Main body; 40-Snap-on; 41-Snap-on section; 42-Limiting section; 43-Guide section; 44-Abutting platform; 50-Third mounting section. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "horizontal," "vertical," etc., do not indicate that the component must be absolutely horizontal or suspended, but can be slightly tilted. The terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Please refer to the reference. Figures 1 to 4 This application provides a paint spraying fixture, including a support member 100. The first end 10 of the support member 100 is detachably connected to a secondary fixture, and the second end 20 of the support member 100 is detachably connected to a car bumper. The support member 100 is conductive or antistatic. This paint spraying fixture can solve the problems of insufficient paint at the support edge and uneven aluminum powder distribution caused by electrostatic adsorption at the support position during bumper painting, which occur during the existing secondary fixture painting process.

[0027] It should be noted that the paint spraying fixture includes a support member 100. Both ends of the support member 100 are designed to be detachable. Specifically, the first end 10 of the support member 100 can be connected to the secondary fixture by bolts, clips, etc., and the second end 20 of the support member 100 can be connected to the car bumper by threads, convex strips, etc., so that the support member 100 can be quickly disassembled and assembled with the secondary fixture and the car bumper, thus facilitating use and replacement.

[0028] It is worth noting that the support component 100 is conductive or antistatic. For example, the support component 100 can be made of conductive metal materials (such as aluminum alloy, stainless steel, etc.), or it can be made of antistatic polymer materials (such as conductive plastic, conductive rubber, etc.). Alternatively, the support component 100 can be made conductive through surface treatment (such as conductive coating, electroplating, etc.) to ensure that the support component 100 does not easily accumulate static electricity. For example, the support component 100 is made of polypropylene plastic, which has the characteristics of resistance to organic solvents (such as xylene, butyl acetate, isobutanol, etc.), high temperature resistance (120°C, 90 min), impact, bending and deformation resistance, and no deformation, peeling and breakage. Regarding the material of the support component 100, those skilled in the art should be able to make reasonable selections and designs according to the actual situation. No specific restrictions are made here, as long as the material of the support component 100 does not contain substances that may cause paint pinholes (such as silicone, silicone grease, etc.).

[0029] During the painting process of car bumpers, because paint particles carry an electric charge, traditional support positions made of carbon steel attract paint particles to accumulate due to electrostatic adsorption. This leads to problems such as insufficient paint at the edges of the support positions and uneven aluminum powder distribution (e.g., missing paint, color difference). The probability of missing paint defects is about 0.5%, and the color difference pass rate at the corners is about 90%. To solve the above problems, the painting fixture provided in this application uses a conductive support member 100 to quickly conduct away the charge on the surface of the support member 100 (e.g., through a grounding device) to avoid the accumulation of charge and the formation of an electrostatic field. Alternatively, using an antistatic support member 100, paint particles are evenly adhered to the surface of the car bumper under the action of spraying pressure and gravity without electrostatic adsorption, and are not attracted to the support member 100 by the electrostatic adsorption effect. This ensures the paint coverage and uniform distribution of aluminum powder at the edges of the support positions, reduces the probability of missing paint defects to 0, and achieves a color difference pass rate of more than 98% at the corners near the support member 100.

[0030] Furthermore, traditional support components made of carbon steel often suffer from excessive paint buildup due to paint adsorption, requiring frequent chemical paint stripping and cleaning (e.g., once a month), which is time-consuming, labor-intensive, and may corrode the fixture. In contrast, the painting fixture provided in this application, with its conductive or antistatic support component 100, does not readily adsorb paint, significantly reducing paint residue on its surface. This extends the cleaning cycle for chemical paint stripping (e.g., once every 6 months), and the replacement frequency of the support component 100 (e.g., once every 20 cycles) is also relatively low. This eliminates the need for frequent cleaning and replacement, reducing chemical consumption and manufacturing costs. Simultaneously, it avoids structural strength degradation caused by frequent corrosion treatment, effectively extending the service life of the painting fixture.

[0031] As one possible implementation method, such as Figure 1 As shown, the secondary fixture is provided with a first mounting part, and the first end 10 of the support member 100 has a second mounting part. The second mounting part cooperates with the first mounting part so that the first end 10 of the support member 100 is mounted on the secondary fixture.

[0032] It should be noted that the secondary fixture, serving as the mounting carrier for the support member 100, achieves rapid positioning and fixation of the support member 100 through the cooperative design of the first mounting part and the second mounting part. Specifically, the secondary fixture is provided with a first mounting part, which can be a groove, threaded hole, slot, or other structure. For example, a rectangular groove matching the cross-section of the support member 100 can be machined on the secondary fixture, or a threaded hole with internal threads can be opened on the secondary fixture for connecting the connecting end (i.e., the first end 10) of the support member 100.

[0033] Meanwhile, the first end 10 of the support member 100 has a second mounting part, the shape of which is adapted to the shape of the first mounting part. The second mounting part can be a rectangular boss (adapted to the rectangular groove of the secondary fixture), a threaded rod with external threads (adapted to the internal threaded hole of the secondary fixture), or an elastic buckle 40 (adapted to the slot of the secondary fixture). The two are detachably fastened together through mechanical cooperation.

[0034] In actual installation, the second mounting part of the support member 100 can be aligned with the first mounting part of the secondary fixture, and the installation can be completed by pushing, screwing, or snapping. For example, after the rectangular boss of the support member 100 slides into place along the rectangular groove of the secondary fixture, it can be fixed by a limiting block; or, after the threaded rod with external threads of the support member 100 is screwed into the threaded hole with internal threads of the secondary fixture, it can be locked by a nut.

[0035] As one possible implementation, in this embodiment, the support member 100 and the secondary fixture are connected by a snap-fit ​​connection. Correspondingly, the first mounting part can be a slot, and the second mounting part can be a buckle 40 that is adapted to the slot, so that the buckle 40 is limited and snapped into the slot; or, the first mounting part can be a buckle, and the second mounting part can be a slot that is adapted to the buckle, so that the buckle is limited and snapped into the slot.

[0036] The snap-fit ​​connection method allows the support component 100 and the secondary fixture to be installed without the need for other tools. Installation can be completed simply by inserting and snapping them together. Disassembly is also completed by applying unlocking force (such as pressing the tail of the buckle 40). This makes it easy to connect the support component 100 and the secondary fixture during use and to quickly disassemble them during replacement, which has the advantage of convenient operation.

[0037] As one possible implementation method, such as Figure 1 , Figure 2 and Figure 4 As shown, there are two buckles 40. The two buckles 40 are arranged opposite each other and spaced apart. When the two buckles 40 are close to each other, they can be inserted into the slot. When the two buckles 40 are far apart, they can be locked in the slot.

[0038] It should be noted that there are two latches 40, which are positioned opposite each other and spaced apart. The two latches 40 can open and close in a direction perpendicular to the engagement direction (e.g., horizontally). During insertion, an external force pushes the support member 100, causing the two latches 40 to move closer together. At this time, the distance between the two latches 40 gradually decreases, allowing the latches 40 to enter the slots of the secondary fixture. After the latches 40 are fully inserted into the slots, during the clamping process, the two latches 40 move away from each other. At this time, the distance between the two latches 40 gradually increases, allowing the latches 40 to clamp tightly with the slots of the secondary fixture, forming a mechanical lock.

[0039] As one possible implementation method, such as Figure 1 , Figure 2 and Figure 4 As shown, both latches 40 are elastic. When the two latches 40 approach each other, they deform and store energy. When the two latches 40 are inserted into the slots, they release energy to move the two latches 40 away from each other.

[0040] It should be noted that both snap fasteners 40 are elastic. For example, snap fasteners 40 are made of high-elasticity modulus alloy or engineering plastic. Each snap fastener 40 has a cantilever beam structure relative to the support member 100, that is, the root of each snap fastener 40 is connected to the main body 30 of the support member 100, and the free end of each snap fastener 40 extends into the slot. The two snap fasteners 40 can open and close in a direction perpendicular to the snapping direction (such as the horizontal direction) due to their own elasticity. During the insertion process, the support member 100 is pushed by an external force, causing the two snap fasteners 40 to move closer to each other. At the same time, the two snap fasteners 40 deform and store elastic potential energy, so that the snap fasteners 40 can enter the slot of the secondary fixture. After the snap fasteners 40 are fully inserted into the slot, during the clamping process, the two snap fasteners 40 can release the stored elastic potential energy, causing the two snap fasteners 40 to move away from each other, thereby enabling the snap fasteners 40 to clamp into the slot of the secondary fixture.

[0041] Of course, in other embodiments, the two buckles 40 can be connected by an elastic structure (such as a spring sheet, a flexible hinge, etc.). Through the deformation energy storage and energy release reset of the elastic structure, the distance between the two buckles 40 is first reduced and then increased, thereby realizing the mechanical locking of the buckles 40 with the slot of the secondary fixture.

[0042] As one possible implementation method, such as Figure 2 and Figure 3 As shown, the support member 100 includes a main body 30 located between the first end 10 and the second end 20, and the buckle 40 includes a snap-fit ​​section 41 and a limiting section 42 that are sequentially arranged and connected to each other from the second end 20 to the first end 10. The snap-fit ​​section 41 snaps into the slot, and the main body 30 and the limiting section 42 abut against the two opposite side walls of the slot, respectively.

[0043] It should be noted that the support member 100 includes a main body 30, with a first end 10 and a second end 20 extending from opposite sides of the main body 30, respectively. The first end 10 is connected to the secondary fixture, and the second end 20 is connected to the car bumper. The main body 30, located between the first end 10 and the second end 20, can transmit mechanical loads. Along the direction from the second end 20 to the first end 10, the buckle 40 can be divided into a sequentially arranged and interconnected snap-fit ​​section 41 and a limiting section 42. The snap-fit ​​section 41 is inserted into and snapped into the slot. When the snap-fit ​​section 41 is locked into the slot, the main body 30 and the limiting section 42 abut against the opposite two side walls of the slot, forming a surface contact, ensuring that the support member 100 will not shake in the slot, thus improving the stability of the connection between the support member 100 and the secondary fixture.

[0044] As one possible implementation method, such as Figure 2 and Figure 3As shown, along the second end 20 to the first end 10, the distance between the snap-fit ​​sections 41 of the two snaps 40 gradually increases, and the maximum distance between the snap-fit ​​sections 41 of the two snaps 40 is less than the distance between the limiting sections 42 of the two snaps 40, so as to form an abutment surface 44 between the snap-fit ​​section 41 and the limiting section 42.

[0045] It should be noted that, along the direction from the second end 20 to the first end 10, the distance between the engaging sections 41 of the two latches 40 gradually increases, forming an outwardly flared shape. The maximum distance between the engaging sections 41 of the two latches 40 is less than the distance between the limiting sections 42 of the two latches 40, so that an abutment surface 44 with an annular structure is formed at the transition between the engaging section 41 and the limiting section 42, so that the abutment surface 44 abuts against the side wall of the slot to form a stop.

[0046] As one possible implementation method, such as Figure 2 and Figure 3 As shown, the buckle 40 also includes a guide section 43 disposed on the side of the limiting section 42 away from the locking section 41 and connected to the limiting section 42. Along the second end 20 to the first end 10, the distance between the guide sections 43 of the two buckles 40 gradually decreases, and the maximum distance between the guide sections 43 of the two buckles 40 is equal to the distance between the limiting sections 42 of the two buckles 40.

[0047] It should be noted that, in addition to the aforementioned snap-fit ​​section 41 and limiting section 42, the buckle 40 also includes a guide section 43. The guide section 43 is located on the side of the limiting section 42 away from the snap-fit ​​section 41, and the guide section 43 is connected to the limiting section 42. Along the direction from the second end 20 to the first end 10, the distance between the guide sections 43 of the two buckles 40 gradually decreases, forming an inwardly concave flared shape, so that the buckle 40 can be smoothly inserted into the slot under the guidance of the guide section 43. The maximum distance between the guide sections 43 of the two buckles 40 is equal to the distance between the limiting sections 42 of the two buckles 40, so that... A smooth transition is achieved between the guide section 43 and the limiting section 42, so that after the guide section 43 is inserted into the card slot, the limiting section 42 can also be smoothly inserted into the card slot. The maximum distance between the engaging sections 41 of the two buckles 40 is less than the distance between the limiting sections 42 of the two buckles 40, so that after the limiting section 42 is inserted into the card slot, when the buckles 40 move to the point where the engaging section 41 extends into the card slot and the limiting section 42 extends out of the card slot, the two buckles 40 can release energy and move away from each other, so that the abutment surface 44 located at the transition between the engaging section 41 and the limiting section 42 can lock with the card slot.

[0048] As one possible implementation method, such as Figures 1 to 3 As shown, the second end 20 of the support member 100 has a third mounting portion 50, which is used to cooperate with a fourth mounting portion on the car bumper so that the third end of the support member 100 is connected to the car bumper.

[0049] It should be noted that the support member 100 achieves rapid positioning and reliable connection with the bumper through the cooperative design of the third mounting part 50 and the fourth mounting part of the car bumper. Similar to the first and second mounting parts mentioned above, the third mounting part 50 can be a boss, connecting rod, hook, or other structure, as long as the third mounting part 50 and the fourth mounting part are compatible with each other. No specific restrictions are imposed here, and those skilled in the art should be able to adapt the third mounting part 50 to the fourth mounting part of the car bumper.

[0050] In actual manufacturing, the support component 100 can be injection molded. Those skilled in the art should be able to make reasonable selections and designs for the dimensions of each position of the support component 100 according to actual needs; no specific limitations are imposed here.

[0051] This application embodiment also provides a painting fixture, including a secondary fixture and the aforementioned painting fixture, wherein the secondary fixture and the painting fixture are detachably connected. The secondary fixture serves as the main structure of the painting fixture. Through the detachable connection between the secondary fixture and the support member 100 of the painting fixture, the support member 100 can be quickly assembled and disassembled from both the secondary fixture and the car bumper. This allows the painting fixture to fix and position the car bumper, providing support during the painting process and facilitating the smooth execution of the car bumper painting process. Since the structure and beneficial effects of the painting fixture have been described in detail in the foregoing embodiments, they will not be repeated here.

[0052] The above description is merely an optional embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0053] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

Claims

1. A paint spraying jig, characterized by, The device includes a support member, the first end of which is detachably connected to a secondary fixture, and the second end of which is detachably connected to a car bumper. The support member is conductive or antistatic.

2. The paint fixture of claim 1, wherein, The secondary fixture is provided with a first mounting part, and the first end of the support member has a second mounting part. The second mounting part cooperates with the first mounting part so that the first end of the support member is mounted on the secondary fixture.

3. The paint fixture of claim 2, wherein, The first mounting part is a slot, and the second mounting part is a buckle adapted to the slot, wherein the buckle is limited and engaged in the slot; or, the first mounting part is a buckle, and the second mounting part is a slot adapted to the buckle, wherein the buckle is limited and engaged in the slot.

4. The paint fixture of claim 3, wherein, The number of the buckles is two, and the two buckles are arranged opposite each other and spaced apart. When the two buckles are close to each other, the two buckles can extend into the buckle slot. When the two buckles are far apart, the two buckles can be locked in the buckle slot.

5. The paint fixture of claim 4, wherein, Both of the latches are elastic. When the two latches approach each other, they deform and store energy. When the two latches extend into the slot, they release energy so that the two latches move away from each other.

6. The paint fixture of claim 5, wherein, The support member includes a main body located between the first end and the second end. The buckle includes a snap-fit ​​section and a limiting section that are sequentially arranged and connected to each other from the second end to the first end. The snap-fit ​​section snaps into the slot. The main body and the limiting section abut against two opposite side walls of the slot, respectively.

7. The paint fixture of claim 6, wherein, Along the second end to the first end, the distance between the latching sections of the two latches gradually increases, and the maximum distance between the latching sections of the two latches is less than the distance between the limiting sections of the two latches, so as to form an abutment platform between the latching sections and the limiting sections.

8. The paint fixture of claim 6, wherein, The buckle also includes a guide section disposed on the side of the limiting section away from the locking section and connected to the limiting section. Along the second end to the first end, the distance between the guide sections of the two buckles gradually decreases, and the maximum distance between the guide sections of the two buckles is equal to the distance between the limiting sections of the two buckles.

9. The paint jig according to any one of claims 1 to 8, wherein The second end of the support member has a third mounting portion, which is used to cooperate with a fourth mounting portion on the car bumper so that the third end of the support member is connected to the car bumper.

10. A paint spraying rig characterised in that, It includes a secondary fixture and a painting fixture as described in any one of claims 1 to 9, wherein the secondary fixture and the painting fixture are detachably connected.

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