Quick-release scraper mechanism and printing equipment

Abstract

The utility model belongs to the technical field of solder paste printing, and particularly relates to a quick-release scraper mechanism and printing equipment. The quick-release scraper mechanism comprises a locking assembly, a supporting frame and a scraper provided with a connecting arm. The locking assembly comprises a locking shaft, a locking block and a cam connected to the locking shaft in a sleeving mode. The locking block is provided with a locking arm and a cam groove matched with the cam. The lock shaft is rotationally installed on the supporting frame, and the cam is rotationally installed in the cam groove. A locking groove used for locking the connecting arm is formed between the locking arm and the supporting frame. And the lock shaft is used for driving the cam to rotate in the cam groove so as to enable the locking block to move, and is used for locking the connecting arm in the lock groove or releasing the connecting arm in the lock groove. The scraper on the quick-disassembly type scraper mechanism is easy to disassemble and operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of solder paste printing, in particular to a quick-detachable scraper mechanism and printing equipment. Background Art

[0002] The scraper is an important part of the solder paste printer responsible for imprinting the solder paste onto the circuit board. The solder paste printer is usually equipped with two scrapers with blades facing opposite directions. The two scrapers are divided into a front scraper and a rear scraper. During the reciprocating motion of the printer, the front scraper and the rear scraper respectively imprint the solder paste on the circuit board.

[0003] In the prior art, the scraper is usually fixed to the support arm by screws, bolts and other fixing parts. When the scraper is replaced or cleaned, the fixing parts need to be removed, which has the technical problem of inconvenient disassembly and assembly operations. Summary of the Invention

[0004] The utility model solves the technical problem of inconvenient assembly and disassembly of a scraper on a scraper mechanism in the prior art, and provides a quick-detachable scraper mechanism and printing equipment.

[0005] In view of the above problems, the embodiment of the present invention provides a quick-release scraper mechanism, comprising a locking assembly, a support frame, and a scraper provided with a connecting arm;

[0006] The locking assembly includes a locking shaft, a locking block, and a cam sleeved on the locking shaft, the locking block is provided with a locking arm and a cam groove adapted to the cam; the locking shaft is rotatably mounted on the support frame, and the cam is rotatably mounted in the cam groove; a locking groove for locking the connecting arm is provided between the locking arm and the support frame;

[0007] The locking shaft is used to drive the cam to rotate in the cam groove so that the locking block moves, and is used to lock the connecting arm in the locking groove, or to release the connecting arm in the locking groove.

[0008] Optionally, the locking block is further provided with a mounting groove connected to the cam groove, and the locking assembly further includes an elastic member installed in the mounting groove; the elastic member abuts against the cam and is used to drive the cam to abut against the inner wall of the cam groove.

[0009] Optionally, the support frame is provided with an internal space and a first through hole and a second through hole both communicating with the internal space, the locking block is slidably mounted in the internal space, the locking arm passes through the first through hole and forms the locking groove between the locking arm and the support frame;

[0010] The locking assembly further includes a rocker arm, and the lock shaft passes through the second through hole and is connected to the rocker arm.

[0011] Optionally, the scraper includes a scraper seat and a scraper body detachably mounted on the scraper seat, and the connecting arm is arranged on the scraper seat.

[0012] Optionally, the quick-release scraper mechanism further includes a positioning member mounted on the support frame, and the scraper is provided with a positioning groove; the positioning member is inserted into the positioning groove to position the scraper on the support frame.

[0013] Optionally, the quick-release scraper mechanism further includes a lifting drive assembly and a first adapter plate, wherein the first adapter plate is installed at the output end of the lifting drive assembly, and the first adapter plate is connected to the support frame.

[0014] Optionally, the quick-release scraper mechanism also includes an adapter assembly, the lifting drive assembly includes a first lifting drive member and a second lifting drive member, the output end of the first lifting drive member is connected to the adapter assembly, the second lifting drive member is installed on the adapter assembly, and the output end of the second lifting drive member is connected to the first adapter plate.

[0015] Optionally, the adapter assembly includes a second adapter plate, a third adapter plate and a guide column; the second adapter plate is mounted on the output end of the first lifting drive member, and the second lifting drive member is mounted on the third adapter plate;

[0016] The second adapter plate is provided with a first guide hole, and the third adapter plate is provided with a second guide hole; the guide post is mounted on the first adapter plate and is slidably inserted into the second guide hole and the first guide hole.

[0017] Optionally, the quick-release scraper mechanism further includes an adjusting member, which is mounted on the support frame and connected to the first adapter plate, and is used to drive the support frame to move.

[0018] Another embodiment of the present invention further provides a printing device, comprising a support base and the aforementioned quick-detachable scraper mechanism, wherein two quick-detachable scraper mechanisms are symmetrically mounted on the support base.

[0019] In the present invention, the locking shaft drives the cam to rotate in the cam slot, and the rotation of the cam in the cam slot can drive the locking block to move, so as to adjust the opening degree of the locking slot; when the opening degree of the locking slot increases, the locking arm can release the connecting arm, at which time the scraper can be removed from the support frame; when the opening degree of the locking slot decreases, the locking arm can lock the connecting arm to the support frame, that is, the locking assembly realizes the function of locking the scraper to the support frame. In the present invention, the scraper can be locked to the support frame and removed from the support frame by simply rotating the locking arm. The scraper removal operation on this quick-release scraper mechanism is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 A schematic structural diagram of a quick-detachable scraper mechanism provided in one embodiment of the present utility model;

[0022] Figure 2 A schematic diagram of a portion of the structure of a quick-detachable scraper mechanism provided in one embodiment of the present utility model;

[0023] Figure 3 A schematic diagram of the exploded structure of the locking assembly of the quick-release scraper mechanism provided in one embodiment of the present utility model;

[0024] Figure 4 This is a partial structural diagram of a printing device provided in one embodiment of the present utility model.

[0025] The reference numerals in the specification are as follows:

[0026] 1. Locking assembly; 11. Locking shaft; 12. Locking block; 121. Cam slot; 122. Locking arm; 123. Mounting slot; 13. Cam; 14. Locking slot; 15. Elastic member; 16. Rocker arm; 2. Support frame; 21. Positioning member; 3. Scraper; 31. Connecting arm; 32. Scraper seat; 33. Scraper body; 34. Positioning slot; 4. Lifting drive assembly; 41. First lifting drive member; 42. Second lifting drive member; 5. First adapter plate; 6. Adapter assembly; 61. Second adapter plate; 62. Third adapter plate; 63. Guide column; 7. Adjusting member; 8. Support seat. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] It should be understood that the terms "upper", "lower", "left", "right", "front", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0029] like Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a quick-release scraper mechanism, comprising a locking assembly 1, a support frame 2, and a scraper 3 provided with a connecting arm 31;

[0030] The locking assembly 1 includes a locking shaft 11, a locking block 12, and a cam 13 sleeved on the locking shaft 11. The locking block 12 is provided with a locking arm 122 and a cam slot 121 adapted to the cam 13. The locking shaft 11 is rotatably mounted on the support frame 2, and the cam 13 is rotatably mounted in the cam slot 121. A locking slot 14 for locking the connecting arm 31 is provided between the locking arm 122 and the support frame 2. It is understandable that the shapes of the cam 13 and the cam slot 121 can be set according to actual needs. Preferably, two locking assemblies 1 are provided, and the two locking assemblies 1 are used to lock the connecting arm 31 from opposite ends.

[0031] The lock shaft 11 is used to drive the cam 13 to rotate in the cam slot 121 to move the locking block 12 , and is used to lock the connecting arm 31 in the locking slot 14 , or to release the connecting arm 31 in the locking slot 14 .

[0032] Specifically, the locking shaft 11 drives the cam 13 to rotate in the cam slot 121. The rotation of the cam 13 in the cam slot 121 can drive the locking block 12 to move, so as to adjust the opening degree of the locking slot 14. When the opening degree of the locking slot 14 increases, the locking arm 122 can release the connecting arm 31. At this time, the scraper 3 can be removed from the support frame 2. When the opening degree of the locking slot 14 decreases, the locking arm 122 can lock the connecting arm 31 on the support frame 2. That is, the locking assembly 1 realizes the function of locking the scraper 3 on the support frame 2. In the present utility model, the scraper 3 can be locked to the support frame 2 and the scraper 3 can be removed from the support frame 2 by simply rotating the locking arm 122. The removal operation of the scraper 3 on the quick-release scraper mechanism is simple.

[0033] In one embodiment, if Figure 3As shown, the locking block 12 is further provided with a mounting slot 123 that communicates with the cam slot 121. The locking assembly 1 also includes an elastic member 15 mounted in the mounting slot 123. The elastic member 15 abuts the cam 13 and is used to drive the cam 13 to abut the inner wall of the cam slot 121. It is understood that the elastic member 15 includes, but is not limited to, a spring. The elastic member 15 abuts the bottom of the cam 13. The rebound force of the elastic member 15 causes the cam 13 to abut the inner wall of the cam slot 121, thereby driving the locking block 12 to move up and down during the rotation of the cam 13. In this embodiment, the design of the elastic member 15 ensures the stability of the cam 13 driving the locking block 12 to move up and down.

[0034] In one embodiment, if Figure 2 As shown in Figure 3, the support frame 2 is provided with an internal space and a first through hole and a second through hole both connected to the internal space, the locking block 12 is slidably installed in the internal space, the locking arm 122 passes through the first through hole and forms the locking groove 14 between the support frame 2; it can be understood that the first through hole is arranged below the support frame 2, and the locking arm 122 also extends out from below the support frame 2, so that the locking groove 14 is arranged between the locking arm 122 and the bottom of the support frame 2.

[0035] The locking assembly 1 further includes a rocker arm 16. The lock shaft 11 passes through the second through hole and is connected to the rocker arm 16. It is understood that the second through hole is provided on the side of the support frame 2, and the rocker arm 16 is located outside the internal space. The user can rotate the lock shaft 11 via the rocker arm 16. In this embodiment, the rotation of the rocker arm 16 further improves the convenience of operating the locking assembly 1.

[0036] In one embodiment, if Figure 2 As shown, the scraper 3 includes a scraper seat 32 and a scraper body 33 detachably mounted on the scraper seat 32. The connecting arm 31 is provided on the scraper seat 32. It is understood that the scraper body 33 can be fixed to the scraper seat 32 by screws, bolts, etc. When the scraper body 33 is worn, the scraper body 33 on the scraper seat 32 can be replaced, thereby reducing the replacement cost of the quick-release scraper mechanism.

[0037] In one embodiment, if Figure 2As shown, the quick-release scraper mechanism further includes a positioning member 21 mounted on the support frame 2. The scraper 3 is provided with a positioning slot 34; the positioning member 21 is inserted into the positioning slot 34 to position the scraper 3 on the support frame 2. It is understood that the positioning member 21 includes, but is not limited to, a positioning pin, a positioning column, etc., and is mounted on top of the scraper holder 32. In this embodiment, the positioning member 21 is inserted into the positioning slot 34, ensuring the precise positioning of the scraper 3 on the support frame 2.

[0038] In one embodiment, if Figure 1 As shown, the quick-release scraper mechanism also includes a lift drive assembly 4 and a first adapter plate 5. The first adapter plate 5 is mounted at the output end of the lift drive assembly 4 and is connected to the support frame 2. It is understood that the lift drive assembly 4 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, a screw-nut mechanism, etc. In this embodiment, the lift drive assembly 4 drives the support frame 2 up and down via the first adapter plate 5, so that the scraper 3 contacts the stencil, thereby imprinting the solder paste on the stencil onto the circuit board.

[0039] In one embodiment, if Figure 1 As shown, the quick-release scraper mechanism also includes an adapter assembly 6. The lifting drive assembly 4 includes a first lifting drive member 41 and a second lifting drive member 42. The output end of the first lifting drive member 41 is connected to the adapter assembly 6. The second lifting drive member 42 is mounted on the adapter assembly 6. The output end of the second lifting drive member 42 is connected to the first adapter plate 5. It is understood that the first lifting drive member 41 and the second lifting drive member 42 include, but are not limited to, pneumatic cylinders, hydraulic cylinders, linear motors, screw-nut mechanisms, etc. In this embodiment, the first lifting drive member 41 can coarsely adjust the lifting and lowering movement of the support frame 2 and the scraper 3, while the second lifting drive member 42 can finely adjust the lifting and lowering movement of the support frame 2 and the scraper 3. This prevents the lifting drive assembly 4 from moving the scraper 3 too much at once, potentially damaging the scraper 3, the steel mesh, or the circuit board, thereby ensuring the safety of the quick-release scraper mechanism.

[0040] In one embodiment, if Figure 1 As shown, the adapter assembly 6 includes a second adapter plate 61, a third adapter plate 62 and a guide column 63; the second adapter plate 61 is installed at the output end of the first lifting drive member 41, and the second lifting drive member 42 is installed on the third adapter plate 62; it can be understood that the first lifting drive member 41 can drive the second adapter plate 61 to move up and down, and the second lifting drive member 42 can drive the first adapter plate 5 to move.

[0041] The second adapter plate 61 is provided with a first guide hole, and the third adapter plate 62 is provided with a second guide hole. The guide post 63 is mounted on the first adapter plate 5 and slides into the second and first guide holes. In this embodiment, during the movement of the first adapter plate 5, the second adapter plate 61, and the third adapter plate 62, the guide post 63 slides within the first and second guide holes, thereby ensuring the stability of the vertical movement of the first adapter plate 5, the second adapter plate 61, and the third adapter plate 62.

[0042] In one embodiment, if Figure 1 As shown, the quick-release scraper mechanism further includes an adjustment member 7, which is mounted on the support frame 2 and connected to the first adapter plate 5, and is used to drive the support frame 2 to move. It is understood that the adjustment member 7 includes but is not limited to an adjustment bolt, an adjustment screw, etc., and the adjustment member 7 can drive the support frame 2 to move left and right, thereby adjusting the position of the scraper 3 mounted on the support frame 2.

[0043] like Figure 4 As shown, another embodiment of the present invention further provides a printing device, comprising a support base 8 and the above-mentioned quick-detachable scraper mechanism, wherein two quick-detachable scraper mechanisms are symmetrically mounted on the support base 8 .

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-release scraper mechanism, characterized in that: It includes a locking assembly, a support frame, and a scraper provided with a connecting arm; The locking assembly includes a locking shaft, a locking block, and a cam sleeved on the locking shaft, the locking block is provided with a locking arm and a cam groove adapted to the cam; the locking shaft is rotatably mounted on the support frame, and the cam is rotatably mounted in the cam groove; a locking groove for locking the connecting arm is provided between the locking arm and the support frame; The locking shaft is used to drive the cam to rotate in the cam groove so that the locking block moves, and is used to lock the connecting arm in the locking groove, or to release the connecting arm in the locking groove.

2. The quick-release scraper mechanism according to claim 1, characterized in that: The locking block is further provided with a mounting groove connected to the cam groove, and the locking assembly further includes an elastic member installed in the mounting groove; the elastic member abuts against the cam and is used to drive the cam to abut against the inner wall of the cam groove.

3. The quick-release scraper mechanism according to claim 1, characterized in that: The support frame is provided with an internal space and a first through hole and a second through hole both communicating with the internal space; the locking block is slidably installed in the internal space; the locking arm passes through the first through hole and forms the locking groove between the locking arm and the support frame; The locking assembly further includes a rocker arm, and the lock shaft passes through the second through hole and is connected to the rocker arm.

4. The quick-release scraper mechanism according to claim 1, characterized in that: The scraper comprises a scraper seat and a scraper body detachably mounted on the scraper seat, and the connecting arm is arranged on the scraper seat.

5. The quick-release scraper mechanism according to claim 1, characterized in that: The quick-detachable scraper mechanism further comprises a positioning member mounted on the support frame, and the scraper is provided with a positioning groove; the positioning member is inserted into the positioning groove to position the scraper on the support frame.

6. The quick-release scraper mechanism according to claim 1, characterized in that: The quick-detachable scraper mechanism further includes a lifting drive assembly and a first adapter plate. The first adapter plate is installed at the output end of the lifting drive assembly, and the first adapter plate is connected to the support frame.

7. The quick-release scraper mechanism according to claim 6, characterized in that: The quick-release scraper mechanism also includes an adapter assembly, the lifting drive assembly includes a first lifting drive member and a second lifting drive member, the output end of the first lifting drive member is connected to the adapter assembly, the second lifting drive member is installed on the adapter assembly, and the output end of the second lifting drive member is connected to the first adapter plate.

8. The quick-release scraper mechanism according to claim 7, characterized in that: The adapter assembly includes a second adapter plate, a third adapter plate and a guide column; the second adapter plate is mounted on the output end of the first lifting drive member, and the second lifting drive member is mounted on the third adapter plate; The second adapter plate is provided with a first guide hole, and the third adapter plate is provided with a second guide hole; the guide post is mounted on the first adapter plate and is slidably inserted into the second guide hole and the first guide hole.

9. The quick-release scraper mechanism according to claim 6, characterized in that: The quick-release scraper mechanism further includes an adjusting member, which is mounted on the support frame and connected to the first adapter plate, and is used to drive the support frame to move.

10. A printing device, characterized in that: It comprises a support base and two quick-detachable scraper mechanisms according to any one of claims 1 to 9, wherein the two quick-detachable scraper mechanisms are symmetrically mounted on the support base.

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