A workpiece taking and placing auxiliary device for glass cover plate spraying tooling

Abstract

This utility model discloses a workpiece loading and unloading auxiliary device for a glass cover plate spraying fixture, including a fixture body and an openable and closable locking unit. The upper part of the fixture body is provided with an expansion ring receiving groove, which houses an elastic air-expanding clamping ring to form a workpiece clamping area. The body contains an air chamber, in which a piston is divided into an action chamber and a drive chamber. The main air path connects the action chamber and the inner cavity of the clamping ring. The reciprocating sliding of the piston can change the pressure in the action chamber, realizing pressurization and depressurization of the clamping ring. The openable and closable locking unit is used to fix or release the fixture body. Compared with the prior art, this utility model integrates a cylinder into the fixture body, connecting it to the elastic air-expanding clamping ring to achieve pressurization and depressurization, replacing external equipment and reducing volume and cost. Based on known conditions, the piston's equilibrium position is accurately obtained, and its sliding is controlled to precisely control the air pressure, avoiding damage to the glass cover plate.

Description

Technical Field

[0001] This utility model belongs to the field of glass cover spraying technology for intelligent mobile terminals, and particularly relates to a workpiece picking and placing auxiliary device for glass cover spraying fixtures. Background Technology

[0002] In the glass cover spraying process, in order to fix the glass cover and cover the non-sprayed areas, a special glass cover covering covering fixture is required.

[0003] In related technologies, a glass cover plate spraying fixture includes: a glass pad for supporting the glass cover plate and an elastic air-expanding clamping ring surrounding the non-spraying area of ​​the glass cover plate; a pressure medium is introduced into the elastic air-expanding clamping ring, causing the elastic air-expanding clamping ring to expand and deform and press and fix the glass cover plate, thereby fixing the glass cover plate; the pressure inside the elastic air-expanding clamping ring is released, causing the elastic air-expanding clamping ring to contract and return to its normal state, so that the elastic air-expanding clamping ring and the glass cover plate are spaced apart, allowing the glass cover plate to be freely removed or placed in; in specific implementation, in order to achieve flexible removal and placement of the glass cover plate, a special removal and placement device needs to be set for the glass fixing fixture, and the removal and placement device needs to be able to introduce or release pressure medium into the elastic air-expanding clamping ring (it should be noted that this description only provides background information related to the disclosure of this utility model and does not constitute prior art).

[0004] In the existing technology, general-purpose vacuum pressure integrated machines can realize the functions of pressurization and vacuuming.

[0005] The drawback of using a general-purpose vacuum pressure integrated machine to achieve the above functions is that the general-purpose vacuum pressure integrated machine is large in size, has high investment cost, and its pressure regulation accuracy is low, making it difficult to meet the requirement of precise pressure control to avoid damage to the glass cover.

[0006] Therefore, it is necessary to provide a new workpiece handling auxiliary device for glass cover plate spraying fixtures to solve the above-mentioned technical problems. Summary of the Invention

[0007] (a) Technical problems to be solved Based on this, the present invention provides a workpiece loading and unloading auxiliary device for glass cover plate spraying fixture, in order to solve the technical problems of the existing technology that uses a general-purpose vacuum pressure integrated machine as the opening and closing power of the glass cover plate spraying fixture, which has large size, high investment cost, and low pressure adjustment accuracy, making it difficult to meet the requirements of precise pressure control to avoid damage to the glass cover plate.

[0008] (II) Technical Solution To solve the above-mentioned technical problems, this utility model proposes a workpiece loading and unloading auxiliary device for glass cover plate spraying fixtures, comprising: a fixture body, the upper part of which is provided with an expansion ring receiving groove for accommodating an elastic air-expanding clamping ring, the elastic air-expanding clamping ring forming a workpiece clamping area; an air cavity is provided inside the fixture body, a piston is slidably connected inside the air cavity, the piston divides the air cavity into an action cavity and a drive cavity, the fixture body is also provided with a main air passage, one end of the main air passage is connected to the action cavity, and the other end of the main air passage is used to connect to the inner cavity of the elastic air-expanding clamping ring, by the reciprocating sliding of the piston and changing the pressure of the action cavity, pressurization and depressurization of the inner cavity of the elastic air-expanding clamping ring are realized; the workpiece loading and unloading auxiliary device for glass cover plate spraying fixtures also includes an openable and closable locking unit for fixing or releasing the fixture body.

[0009] Preferably, the workpiece handling auxiliary device for the glass cover plate spraying fixture further includes a piston rod, one end of which is connected to the piston via the driving cavity, and the other end of which extends out of the fixture body. The driving cavity also includes a limiting cylinder and a compression spring, which are respectively sleeved on the piston rod, with the compression spring located between the piston rod and the limiting cylinder. The end of the limiting cylinder near the piston is a stroke limiting surface. The compression spring is used to drive the piston to slide along the direction of pressing the working cavity. The workpiece handling auxiliary device for the glass cover plate spraying fixture further includes an external telescopic power unit located outside the fixture body and used to move the piston rod and the piston as a whole along the direction of pressing the driving cavity. The fixture body also includes a piston balance position adjusting air passage, with a first adjusting air port and a second adjusting air port at both ends. The first adjusting air port communicates with the working cavity, and the second adjusting air port is provided with a sealing plug.

[0010] Preferably, the tooling body further includes an air inlet / outlet passage, the two ends of which are a first air inlet / outlet and a second air inlet / outlet, respectively. The first air inlet / outlet is connected to the drive cavity, and the second air inlet / outlet is provided with a silencer.

[0011] Preferably, the piston rod has a protruding rod pull head fixed at one end away from the tooling body; the external telescopic power unit includes: an external lever telescopic cylinder, an unlocking plate, and a fork fixed on the unlocking plate. The fork acts on the rod pull head and drives the rod pull head to slide away from the tooling body. The top of the fork has a recessed U-shaped groove.

[0012] Preferably, the bottom of the fixture body is further provided with a recessed longitudinal through slot, the longitudinal through slot and the air cavity are located side by side on both sides of the fixture body, and the workpiece picking and placing auxiliary device for glass cover plate spraying fixture further includes a fixing seat, the top of the fixing seat is provided with a positioning strip for cooperating with the longitudinal through slot and for positioning the fixture body.

[0013] Preferably, the bottom of the tooling body is further provided with a first transverse slot and a second transverse slot, the first transverse slot and the second transverse slot being formed by two opposite sidewalls of the longitudinal through slot respectively recessed; the openable locking unit includes: a first telescopic block, a second telescopic block and a wedge-shaped drive block disposed between the first telescopic block and the second telescopic block; the first telescopic block and the second telescopic block are respectively positioned opposite the first transverse slot and the second transverse slot, the two sides of the wedge-shaped drive block are slidably connected to the first telescopic block and the second telescopic block respectively, and the two sides of the wedge-shaped drive block form an inclined force transmission structure with the first telescopic block and the second telescopic block respectively; the workpiece picking and placing auxiliary device for the glass cover plate spraying tooling further includes a block telescopic drive cylinder connected to the wedge-shaped drive block and used to drive the wedge-shaped drive block to rise and fall.

[0014] Preferably, the top of the positioning strip is fixedly provided with a protruding locking block receiving block, and the locking block receiving block is provided with a transverse through groove, wherein the first telescopic locking block and the second telescopic locking block are both slidably disposed in the transverse through groove.

[0015] Preferably, the fixed base is provided with a limiting baffle for limiting the stroke of the shift fork at the position opposite to the shift fork.

[0016] Preferably, the workpiece handling auxiliary device for glass cover spraying fixture further includes a worktable, the external lever telescopic cylinder and the fixed seat are respectively fixed on the worktable, a linear guide rail is provided below the unlocking plate, the upper and lower parts of the linear guide rail are slidably connected and respectively fixedly connected to the unlocking plate and the worktable, and the lower part of the linear guide rail is fixed on the worktable; the locking block telescopic drive cylinder is fixedly installed below the worktable.

[0017] Preferably, the workpiece handling auxiliary device for the glass cover plate spraying fixture further includes a top material lifting cylinder for ejecting the workpiece from the workpiece clamping area; the lower part of the top material lifting cylinder is fixedly installed on the lower part of the worktable, and the upper part of the top material lifting cylinder passes through the worktable and the fixed seat in sequence, and can extend into the expansion ring receiving groove; a top material block is installed on the upper part of the top material lifting cylinder.

[0018] (III) Beneficial Effects Compared with the prior art, the workpiece handling auxiliary device for glass cover spraying fixture of this utility model integrates a cylinder in the main body of the fixture, and connects to the elastic air expansion clamping ring to realize pressure application and depressurization, replacing external equipment and reducing volume and cost; the fixture is fixed by an openable and lockable unit, making it a reusable whole, improving space utilization and the overall integrity of the fixture; in addition, the piston balance position is accurately obtained based on known conditions, and its sliding is controlled to accurately control the air pressure and avoid damage to the glass cover. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 For along Figure 2 Schematic diagram of the cross section of line AA; Figure 4 For along Figure 3 Schematic diagram of the cross section of the middle BB line; Figure 5 This is a three-dimensional schematic diagram of part of the structure of this utility model; Figure 6 This is a three-dimensional schematic diagram of the main body of the tooling in this utility model. Figure 1 (Including dashed lines); Figure 7 This is a three-dimensional schematic diagram of the main body of the tooling in this utility model. Figure 2 (Excluding dashed lines).

[0021] Explanation of reference numerals in the attached figures: 1. Glass cover plate; 2. Elastic air-expanding clamping ring; 3. Tooling body; 013. Piston; 014. Openable and closable locking unit; 015. Piston rod; 016. Compression spring; 017. External telescopic power unit; 018. Sealing plug; 019. Silencer; 020. Rod pull head; 021. Fixed base; 022. Worktable; 023. Linear guide rail; 024. Clamping block telescopic drive cylinder; 025. Top material lifting cylinder; 026. Limit cylinder; 21. Workpiece clamping area; 34. Expansion ring receiving groove; 35. Air chamber; 36. Main air passage; 37. Piston balance position adjusting air passage; 38. Inlet and outlet air passages; 39. Longitudinal through groove; 40. First transverse groove; 41. Second transverse groove; 351. Actual chamber; 352. Driving chamber; 371. First regulating air port; 372. Second regulating air port; 381. First air inlet / outlet; 382. Second air inlet / outlet; 0141. First telescopic locking block; 0142. Second telescopic locking block; 0143. Wedge-shaped drive block; 0171. External lever telescopic cylinder; 0172. Unlocking plate; 0173. Shift fork; 0261. Travel limit surface; 01731, U-shaped groove; 0211. Positioning guide bar; 0212. Limiting baffle; 0213. Locking block receiving block; 02131, Horizontal through groove. Detailed Implementation

[0022] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] The following is in conjunction with the appendix Figure 1-7 The present invention provides a further description of the workpiece handling auxiliary device for glass cover plate spraying fixture.

[0024] Figure 2 The red line in the middle indicates the elastic air-expanding clamping ring 2; Figure 6 In the diagram, the blue line indicates "main air passage 36", the yellow line indicates "piston balance position adjustment air passage 37", and the green line indicates "inlet and outlet air passage 38".

[0025] This utility model discloses a workpiece loading and unloading auxiliary device for a glass cover plate spraying fixture, comprising: a fixture body 3, the upper part of which is provided with an expansion ring receiving groove 34 for accommodating an elastic air-expanding clamping ring 2, the elastic air-expanding clamping ring 2 forming a workpiece clamping area 21; an air chamber 35 is provided inside the fixture body 3, a piston 013 is slidably connected inside the air chamber 35, the piston 013 divides the air chamber 35 into an action chamber 351 and a drive chamber 352, a main air passage 36 is also provided on the fixture body 3, one end of the main air passage 36 is connected to the action chamber 351, and the other end of the main air passage 36 is used to connect to the inner cavity of the elastic air-expanding clamping ring 2, by the reciprocating sliding of the piston 013 and changing the pressure of the action chamber 351, so as to realize the pressurization and depressurization of the inner cavity of the elastic air-expanding clamping ring 2; the workpiece loading and unloading auxiliary device for a glass cover plate spraying fixture also includes an openable and closable locking unit 014 for fixing or releasing the fixture body 3.

[0026] The object of the pick-and-place auxiliary device of this utility model is a glass cover plate spraying fixture, and the workpiece is a glass cover plate 1.

[0027] The glass cover plate spraying fixture includes: a glass pad for supporting the glass cover plate 1 and an elastic air-expanding clamping ring 2 surrounding the outer wall of the glass cover plate 1; the elastic air-expanding clamping ring 2 is made of elastic material and has an air-expanding ring structure. A pressure medium is introduced into the elastic air-expanding clamping ring 2, causing it to expand and deform, and press and fix the glass cover plate 1, thus securing the glass cover plate 1; the pressure medium is released from the elastic air-expanding clamping ring 2, causing it to return to its normal state or contract inward, so that the elastic air-expanding clamping ring 2 is spaced apart from the glass cover plate 1. In this state, the glass cover plate 1 can be freely removed or inserted.

[0028] The structure of this embodiment has the following beneficial effects: (i) An air chamber 35 is provided in the main body 3 of the tooling, and components such as a piston 013 and a piston rod 015 are provided in the air chamber 35 to form a cylinder. Since the working chamber 351 of the cylinder is connected to the inner cavity of the elastic air-expanding clamping ring 2, the cylinder can pressurize and depressurize or evacuate the inner cavity of the elastic air-expanding clamping ring 2. The power for the reciprocating movement of the piston 013 can be realized by a double-acting telescopic electric cylinder connected to the piston 013, or by a combination of a compression spring 016 and a single-acting external lever telescopic cylinder 0171. Therefore, the workpiece pick-and-place auxiliary tooling of this utility model can realize the clamping and unlocking of workpieces in the spraying tooling by replacing the external vacuum pressure integrated machine with an integrated cylinder. By adopting this structure, the internal space of the main body 3 of the tooling is fully utilized, the volume of the workpiece pick-and-place auxiliary device is greatly reduced, and the cost is reduced.

[0029] (II) The openable and closable locking unit 014 can also fix the bottom of the spraying fixture. The fixture body 3 in this utility model can also serve as the main component of the glass cover spraying fixture, and can fix the elastic air-expanding clamping ring 2 in its expansion ring receiving groove 34. The elastic air-expanding clamping ring 2 and the fixture body 3 are a turnover unit. After the spraying process is completed, the whole can be fixed by the openable and closable locking unit 014. After depressurizing the elastic air-expanding clamping ring 2, the workpiece can be unlocked, the workpiece can be taken out, and a new workpiece to be sprayed can be reinstalled. Then, the elastic air-expanding clamping ring 2 is pressurized again to lock the new workpiece to be sprayed. Then, the elastic air-expanding clamping ring 2 and the fixture body 3, which clamp the workpiece to be sprayed, are used as a turnover unit. After passing through the spraying station and drying station in sequence, they return to the workpiece pick-up and drop station and repeat the above process. Therefore, by adopting this structure, the space utilization rate can be further improved, and the overall integrity of the glass cover spraying fixture can be improved.

[0030] (III) During the design process, based on known conditions such as the volume of the inner cavity of the elastic air-expanding clamping ring 2 before and after expansion, the volume of the working chamber 351, and the volume of the main air passage 36, the equilibrium position of the piston 013 can be accurately obtained (the equilibrium position is when the pressures of the working chamber 351 and the driving chamber 352 are equal, and the elastic air-expanding clamping ring 2 is in a state of expanding and pressing to fix the workpiece); the sliding limit position of the piston 013 under the working conditions of picking up and placing the workpiece can be further obtained. In subsequent use, as long as the piston 013 is controlled to switch between the predetermined sliding limit positions, the pressure inside the elastic air-expanding clamping ring 2 can be accurately controlled, which exactly meets the air pressure requirements for picking up and placing the workpiece, thus realizing precise control of the pressure inside the elastic air-expanding clamping ring 2.

[0031] According to a specific embodiment of this utility model, the workpiece handling auxiliary device for glass cover plate spraying fixture further includes a piston rod 015. One end of the piston rod 015 is connected to the piston 013 via a drive cavity 352, and the other end of the piston rod 015 extends out of the fixture body 3. A limiting cylinder 026 and a compression spring 016 are also provided inside the drive cavity 352. The compression spring 016 and the limiting cylinder 026 are respectively sleeved on the piston rod 015, and the compression spring 016 is located between the piston rod 015 and the limiting cylinder 026. The end of the limiting cylinder 026 near the piston 013 is the stroke limiting surface 0261 of the piston 013. Spring 016 is used to drive piston 013 to slide along the direction of extrusion chamber 351; the workpiece pick-and-place auxiliary device for glass cover plate spraying fixture also includes an external telescopic power unit 017 located outside the fixture body 3 and used to move piston rod 015 and piston 013 as a whole to slide along the direction of extrusion drive chamber 352; the fixture body 3 also includes piston balance position adjusting air passage 37, the two ends of piston balance position adjusting air passage 37 are a first adjusting air port 371 and a second adjusting air port 372 respectively, the first adjusting air port 371 is connected to the chamber 351, and the second adjusting air port 372 is provided with a sealing plug 018.

[0032] In this embodiment, due to the action of the compression spring 016, the normal state of this utility model is that the spring compresses the piston 013, that is, the elastic air-expanding clamping ring 2 is in a state of being pressurized and expanded, and can fix the glass cover plate 1. When the tooling body 3 is released from fixation, the elastic air-expanding clamping ring 2, the workpiece clamped and fixed therein, and the tooling body 3 move as a turnover unit on the production line, ensuring that the workpiece can remain in a clamped and fixed state without other external power in the spraying station and drying station, while meeting the requirements of the workpiece being clamped and fixed and free to move on the production line. In specific implementation, by reasonably selecting the mechanical parameters of the compression spring 016, it is ensured that the elastic force provided by the compression spring 016 can keep the piston 013 in a balanced position.

[0033] When the external telescopic power unit 017 moves the piston rod 015 and the piston 013 together to slide along the direction of the extrusion drive chamber 352, the working chamber 351 becomes larger, depressurizing or evacuating the inner cavity of the elastic air-expanding clamping ring 2, so that the elastic air-expanding clamping ring 2 returns to its original shape or is even sucked to be set tightly against the inner wall of the tooling body 3, ensuring that there is a sufficient gap between the elastic air-expanding clamping ring 2 and the glass cover plate 1, providing conditions for the flexible handling of workpieces.

[0034] The piston balance position adjusting air passage 37 cooperates with the sealing plug 018 to adjust the piston balance position. This facilitates the installation and debugging of this utility model and can further improve the accuracy of the internal pressure of the elastic air expansion clamping ring 2. Specifically, when installing and debugging the workpiece handling auxiliary device of this utility model (orientation reference...), Figure 3 If the balance position of piston 013 is found to be to the left, the sealing plug 018 can be loosened by rotating it. This releases a portion of the gas in the working chamber 351 through the piston balance position adjustment air passage 37. Then, the sealing plug 018 is tightened in the opposite direction to reduce the volume of air in the working chamber 351, thus adjusting the balance position of piston 013 to the right. If the balance position of piston 013 is found to be to the right, the sealing plug 018 can be loosened by rotating it. This allows the piston rod 015 and piston 013 to slide along the direction of the extrusion drive chamber 352. External air enters the working chamber 351 through the piston balance position adjustment air passage 37. Then, the sealing plug 018 is tightened in the opposite direction to increase the volume of air in the working chamber 351, thus adjusting the balance position of piston 013 to the left. This structure improves the flexibility of the workpiece handling auxiliary device during installation and debugging, and compensates for errors in the air passage volume or air chamber value during design. It should be noted that the balance position of piston 013 is also the right stroke limit position of piston 013.

[0035] The limiting cylinder 026 serves two purposes: firstly, it works with the piston rod 015 to form a guide cavity that perfectly matches the size of the compression spring 016, thus achieving precise guidance of the compression spring 016; secondly, it limits the leftward sliding stroke of the piston 013, precisely controlling the leftward limit position of the piston 013 (orientation parameter). Figure 3 ).

[0036] According to a specific embodiment of the present invention, the tooling body 3 also includes an air inlet / outlet passage 38, the two ends of which are a first air inlet / outlet 381 and a second air inlet / outlet 382, ​​respectively. The first air inlet / outlet 381 is connected to the drive cavity 352, and the second air inlet / outlet 382 is provided with a silencer 019.

[0037] In this embodiment, the inlet / outlet air passage 38 can discharge air from the drive chamber 352 and depressurize the drive chamber 352 when the piston rod 015 is pulled outward. When the piston rod 015 retracts, gas is introduced into the drive chamber 352 through the inlet / outlet air passage 38 to prevent negative pressure from forming in the drive chamber 352. The inlet / outlet air passage 38 connects the drive chamber 352 with the external space, preventing excessively high air pressure or negative pressure from forming in the drive chamber 352, and ensuring the smooth operation of the piston rod 015.

[0038] The silencer 019 has two functions: on the one hand, it can reduce the noise generated when gas enters and exits, and on the other hand, it can prevent external dust and debris from entering the drive chamber 352.

[0039] According to a specific embodiment of this utility model, a protruding rod pull head 020 is fixedly provided at one end of the piston rod 015 away from the tooling body 3; the external telescopic power unit 017 includes: an external lever telescopic cylinder 0171, an unlocking plate 0172, and a lever fork 0173 fixed on the unlocking plate 0172. The lever fork 0173 is used to act on the rod pull head 020 and drive the rod pull head 020 to slide away from the tooling body 3; the top of the lever fork 0173 has a recessed U-shaped groove 01731.

[0040] In this embodiment, it should be noted that the piston rod 015 is not fixedly connected to the shift fork 0173, but is detachably connected to the shift fork 0173 via a U-shaped groove 01731. The shift fork 0173 is only used to pull out the piston rod 015. The top of the U-shaped groove 01731 has an opening, which facilitates the piston rod 015 to be flexibly inserted into the U-shaped groove 01731 downwards and flexibly disengaged from the U-shaped groove 01731 upwards. This structure facilitates the transmission of power from the external shift lever telescopic cylinder 0171 to the piston rod 015 and pulls the piston rod 015 out, without affecting the flexible rotation of the tooling body 3.

[0041] According to a specific embodiment of the present invention, the bottom of the tooling body 3 is also provided with a recessed longitudinal through groove 39. The longitudinal through groove 39 and the air cavity 35 are located side by side on both sides of the tooling body 3. The workpiece pick-up and drop auxiliary device for glass cover plate spraying tooling also includes a fixed seat 021. The top of the fixed seat 021 is provided with a positioning strip 0211 for cooperating with the longitudinal through groove 39 and for positioning the tooling body 3.

[0042] In this embodiment, the longitudinal through slot 39 and the air cavity 35 are located side by side on both sides of the tooling body 3. This structure is conducive to improving the space utilization of the tooling body 3. The positioning strip 0211 cooperates with the longitudinal through slot 39 to achieve rapid positioning of the tooling body 3.

[0043] According to a specific embodiment of this utility model, the bottom of the tooling body 3 is further provided with a first transverse groove 40 and a second transverse groove 41, the first transverse groove 40 and the second transverse groove 41 being formed by two opposite side walls that longitudinally penetrate the groove 39 respectively recessed; the openable locking unit 014 includes: a first telescopic block 0141, a second telescopic block 0142 and a wedge-shaped drive block 0143 disposed between the first telescopic block 0141 and the second telescopic block 0142; the first telescopic block 0141 and the second telescopic block 0142... 2 are respectively positioned opposite the first transverse slot 40 and the second transverse slot 41. The two sides of the wedge-shaped drive block 0143 are slidably connected to the first telescopic block 0141 and the second telescopic block 0142, and the two sides of the wedge-shaped drive block 0143 form an inclined force transmission structure with the first telescopic block 0141 and the second telescopic block 0142, respectively. The workpiece picking and placing auxiliary device for glass cover plate spraying tooling also includes a block telescopic drive cylinder 024 connected to the wedge-shaped drive block 0143 and used to drive the wedge-shaped drive block 0143 to rise and fall.

[0044] In this embodiment, the first transverse slot 40 and the second transverse slot 41 are designed to longitudinally penetrate the two opposite sidewalls of the slot 39. Compared with separately molding the first transverse slot 40 and the second transverse slot 41, this reduces the space occupied and processing costs. When the wedge-shaped drive block 0143 rises, it can drive the first telescopic block 0141 and the second telescopic block 0142 to extend into the first transverse slot 40 and the second transverse slot 41 respectively, thereby achieving the snap-fit ​​fixation of the tooling body 3. When the wedge-shaped drive block 0143 descends, it can drive the first telescopic block 0141 and the second telescopic block 0142 to disengage from the first transverse slot 40 and the second transverse slot 41 respectively, thereby achieving the release of the tooling body 3 from fixation.

[0045] More specifically, the first telescopic block 0141 has a recessed first inclined guide groove on the side near the second telescopic block 0142; the second telescopic block 0142 has a recessed second inclined guide groove on the side near the first telescopic block 0141; the two sides of the wedge-shaped drive block 0143 are slidably connected in the first inclined guide groove and the second inclined guide groove respectively, and the two sides of the wedge-shaped drive block 0143 are the first drive inclined surface and the second drive inclined surface respectively.

[0046] According to a specific embodiment of the present invention, a protruding locking block 0213 is fixedly provided on the top of the positioning strip 0211. A transverse through groove 02131 is provided on the locking block 0213. The first telescopic locking block 0141 and the second telescopic locking block 0142 are both slidably disposed in the transverse through groove 02131.

[0047] In this embodiment, the transverse through groove 02131 has two functions. On the one hand, it can guide the transverse sliding of the first telescopic block 0141 and the second telescopic block 0142. On the other hand, the top of the transverse through groove 02131 can also limit the top of the wedge-shaped drive block 0143, so as to indirectly control the extension stroke of the first telescopic block 0141 and the second telescopic block 0142.

[0048] According to a specific embodiment of the present invention, a limiting baffle 0212 for limiting the travel of the shift fork 0173 is provided at the position of the fixed base 021 directly opposite the shift fork 0173.

[0049] In this embodiment, the limiting baffle 0212 is a mechanical limiting baffle, which is located in front of the tooling body 3 and can prevent the shift fork 0173 from hitting the tooling body 3, thereby improving safety performance.

[0050] According to a specific embodiment of this utility model, the workpiece handling auxiliary device for glass cover plate spraying fixture further includes a worktable 022, an external lever telescopic cylinder 0171 and a fixed base 021 respectively fixed on the worktable 022, and a linear guide rail 023 is provided below the unlocking plate 0172. The upper and lower parts of the linear guide rail 023 are slidably connected, and the upper and lower parts of the linear guide rail 023 are respectively fixedly connected to the unlocking plate 0172 and the worktable 022. The lower part of the linear guide rail 023 is fixed to the worktable 022; the block telescopic drive cylinder 024 is fixedly installed below the worktable 022.

[0051] In this embodiment, the workbench plate 022 is used to fix and support the external lever telescopic cylinder 0171, the fixed seat 021 and the lower part of the linear guide rail 023. The workbench plate 022 is also used to fix and install the block telescopic drive cylinder 024 and the top material lifting cylinder 025.

[0052] According to a specific embodiment of the present invention, the workpiece pick-and-place auxiliary device for the glass cover plate spraying fixture further includes a top material lifting cylinder 025 for ejecting the workpiece from the workpiece clamping area 21; the lower part of the top material lifting cylinder 025 is fixedly installed on the lower part of the worktable 022, and the upper part of the top material lifting cylinder 025 passes through the worktable 022 and the fixed seat 021 in sequence, and can extend into the expansion ring receiving groove 34; a top material block is installed on the upper part of the top material lifting cylinder 025.

[0053] In this embodiment, the worktable 022 is also used to fix and install the top lifting cylinder 025. When the elastic air-expanding clamping ring 2 is in a depressurized or vacuumed state, there is a gap between the workpiece and the elastic air-expanding clamping ring 2. The top lifting cylinder 025 drives the top block to push the workpiece upward, further facilitating the removal of the workpiece. In specific implementation, the top block is made of rubber material to avoid damaging the workpiece.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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; they can refer to the internal connection of two components; and they can also refer to a "transmission connection," that is, a power connection through various suitable methods such as belt drive, gear drive, or sprocket drive. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A workpiece handling auxiliary device for glass cover plate spraying fixture, characterized in that, include: The fixture body includes an expansion ring receiving groove on its upper part for accommodating an elastic air-expanding clamping ring, which forms a workpiece clamping area. An air chamber is provided within the fixture body, and a piston is slidably connected within the air chamber. The piston divides the air chamber into an action chamber and a drive chamber. A main air passage is also provided on the fixture body. One end of the main air passage communicates with the action chamber, and the other end communicates with the inner cavity of the elastic air-expanding clamping ring. By reciprocating the piston and changing the pressure in the action chamber, pressure is applied and depressurized to the inner cavity of the elastic air-expanding clamping ring. The workpiece handling auxiliary device for the glass cover plate spraying fixture also includes an openable locking unit for fixing or releasing the fixture body.

2. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 1, characterized in that, The workpiece handling auxiliary device for glass cover plate spraying fixture further includes a piston rod, one end of which is connected to a piston via the drive cavity, and the other end of which extends out of the fixture body. A limiting cylinder and a compression spring are also provided inside the drive cavity. The compression spring and the limiting cylinder are respectively sleeved on the piston rod, with the compression spring located between the piston rod and the limiting cylinder. The end of the limiting cylinder near the piston is a stroke limiting surface. The compression spring is used to drive the piston to slide along the direction of pressing the working cavity. The workpiece handling auxiliary device for glass cover plate spraying fixture further includes an external telescopic power unit located outside the fixture body and used to move the piston rod and the piston as a whole to slide along the direction of pressing the drive cavity. The fixture body also includes a piston balance position adjusting air passage, with a first adjusting air port and a second adjusting air port at both ends. The first adjusting air port communicates with the working cavity, and the second adjusting air port is provided with a sealing plug.

3. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 2, characterized in that, The tooling body also includes an air inlet and outlet passage, with a first air inlet / outlet and a second air inlet / outlet at each end. The first air inlet / outlet is connected to the drive cavity, and the second air inlet / outlet is equipped with a silencer.

4. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 3, characterized in that, The piston rod is fixedly provided with a protruding rod pull head at one end away from the tooling body; the external telescopic power unit includes: an external lever telescopic cylinder, an unlocking plate, and a lever fork fixed on the unlocking plate. The lever fork is used to act on the rod pull head and drive the rod pull head to slide away from the tooling body. The top of the lever fork has a recessed U-shaped groove.

5. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 4, characterized in that, The bottom of the fixture body is also provided with a recessed longitudinal through slot. The longitudinal through slot and the air chamber are located side by side on both sides of the fixture body. The workpiece pick-and-place auxiliary device for glass cover plate spraying fixture also includes a fixing seat. The top of the fixing seat is provided with a positioning strip for cooperating with the longitudinal through slot and for positioning the fixture body.

6. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 5, characterized in that, The bottom of the tooling body is also provided with a first transverse slot and a second transverse slot, which are formed by the recesses of two opposite side walls of the longitudinal through slot; the openable locking unit includes: a first telescopic block, a second telescopic block, and a wedge-shaped drive block disposed between the first telescopic block and the second telescopic block; the first telescopic block and the second telescopic block are respectively positioned opposite the first transverse slot and the second transverse slot, and the two sides of the wedge-shaped drive block are slidably connected to the first telescopic block and the second telescopic block, and the two sides of the wedge-shaped drive block form an inclined force transmission structure with the first telescopic block and the second telescopic block, respectively; the workpiece picking and placing auxiliary device for the glass cover plate spraying tooling also includes a block telescopic drive cylinder connected to the wedge-shaped drive block and used to drive the wedge-shaped drive block to rise and fall.

7. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 6, characterized in that, The top of the positioning strip is fixedly provided with a protruding locking block receiving block, and the locking block receiving block is provided with a transverse through groove, and the first telescopic locking block and the second telescopic locking block are both slidably disposed in the transverse through groove.

8. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 7, characterized in that, The fixed base is provided with a limiting baffle to restrict the travel of the shift fork at the position opposite to the shift fork.

9. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 8, characterized in that, The workpiece handling auxiliary device for glass cover plate spraying fixture also includes a worktable, the external lever telescopic cylinder and the fixed seat are respectively fixed on the worktable, and a linear guide rail is provided below the unlocking plate. The upper and lower parts of the linear guide rail are slidably connected and fixedly connected to the unlocking plate and the worktable, and the lower part of the linear guide rail is fixed to the worktable; the locking block telescopic drive cylinder is fixedly installed below the worktable.

10. The workpiece handling auxiliary device for glass cover plate spraying fixture according to claim 9, characterized in that, The workpiece handling auxiliary device for glass cover plate spraying fixture also includes a top material lifting cylinder for ejecting the workpiece from the workpiece clamping area; the lower part of the top material lifting cylinder is fixedly installed on the lower part of the worktable, and the upper part of the top material lifting cylinder passes through the worktable and the fixed seat in sequence, and can extend into the expansion ring receiving groove; a top material block is installed on the upper part of the top material lifting cylinder.

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