Pneumatic clamping mechanism for plastic mould processing

Abstract

The utility model relates to the technical field of clamping mechanisms, in particular to a plastic mould processing pneumatic clamping mechanism which comprises a machine table, a first fixing plate and a second fixing plate are fixed to the two opposite ends of the machine table respectively, and a clamping box is fixed to the first fixing plate. The partition block is fixed in the clamping box and divides the interior of the clamping box into an air inlet cavity and an air outlet cavity, the air outlet cavity is communicated with the opening, the air inlet cavity is communicated with the air pump through an air pipe, and a pressure reducing valve communicated with the air inlet cavity is arranged on the clamping box; the clamping rod is arranged in the clamping box and movably penetrates through the partition block, a piston and a first clamping plate are fixed to the two ends of the clamping rod respectively, the piston is arranged in the air inlet cavity, first springs are fixed to the two faces of the partition block respectively, the other ends of the two first springs are fixed to abutting discs respectively, and the clamping rod is movably sleeved with the abutting discs. Compressed air is conveyed into the air inlet cavity through the air pump, so that the first clamping plate enables the plastic part mold to abut against the second fixing plate. After the plastic mold is released, the first spring can abut against the first clamping plate to enable the first clamping plate to loosen the mold and reset.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping mechanisms, in particular to a pneumatic clamping mechanism for plastic mold processing. Background Art

[0002] Plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. During the processing of plastic molds, a clamping mechanism is usually required to ensure the stability and accuracy of the mold during the processing.

[0003] Most existing plastic mold clamping mechanisms use mechanical or pneumatic clamping methods, and clamp and release the mold through manual or automatic control systems. However, after completing the clamping operation, these clamping mechanisms generally require manual resetting of the clamping part to create an appropriate gap for the placement of the next plastic mold. This manual resetting method increases the labor intensity of the operator and reduces the efficiency of the clamping operation. Therefore, the present utility model is to provide a pneumatic clamping mechanism for plastic mold processing that can automatically reset after the clamping operation. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the shortcomings of the existing technology, the utility model provides a pneumatic clamping mechanism for plastic mold processing, which can automatically reset after the clamping operation to solve the problem in the existing technology that it is difficult to automatically reset after the clamping operation.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned purpose, the utility model provides a pneumatic clamping mechanism for plastic mold processing, including a machine table, with a fixing plate 1 and a fixing plate 2 respectively fixed at two opposite ends, a clamping box fixed on the fixing plate 1, and a first end of the clamping box having an opening; a dividing block fixed in the clamping box, and dividing the clamping box into an air inlet cavity and an air outlet cavity, the air outlet cavity is connected to the opening, the air inlet cavity is connected to an air pump through an air pipe, and the clamping box is provided with a pressure reducing valve connected to the air inlet cavity; a clamping rod is provided in the clamping box and movably passes through the dividing block, a piston and a clamping plate 1 are respectively fixed at both ends of the clamping rod, the piston is provided in the air inlet cavity, a spring 1 is fixed on both sides of the dividing block, and the other ends of the two springs 1 are respectively fixed to an abutment disk, and the abutment disk is movably sleeved on the clamping rod.

[0008] Optionally, a movable groove is provided in the clamping box along its length direction, and a guide rod is fixed on the abutment plate located in the air inlet cavity. The guide rod is movable through a C-shaped plate body, and a second spring is provided on the guide rod. The second spring is provided between the abutment plate and the plate body, and a movable wheel is rotatably provided between the two ends of the plate body.

[0009] Optionally, a second L-shaped clamping plate is provided on the second fixing plate.

[0010] Optionally, the first clamping plate is provided with a first rubber portion, and the second clamping plate is provided with a second rubber portion.

[0011] Optionally, the clamping plate 1 is rotatably connected to the clamping rod, and the clamping plate 2 is rotatably connected to the fixed plate 2. A locking mechanism is provided between the clamping plate 2 and the fixed plate 2, which is used to selectively fix the clamping plate 2 and the fixed plate 2 relative to each other to limit or allow the clamping plate 2 to rotate relative to the fixed plate 2.

[0012] Optionally, the locking mechanism includes a locking rod, a limit plate, a spring three and a fixed plate three; the fixed plate three is L-shaped and fixed on the fixed plate two, the locking rod movably passes through the second end of the fixed plate three, the limit plate is sleeved on the locking rod and is arranged between the fixed plate three and the fixed plate two; the spring three is sleeved on the locking rod, and the two ends of the spring three elastically abut the limit plate and the fixed plate three respectively; the locking rod movably passes through the fixed plate two, and the clamping plate two is provided with a plurality of locking openings suitable for the movably inserted locking rod along its rotation axis.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a pneumatic clamping mechanism for plastic mold processing, which has the following beneficial effects:

[0015] 1. This utility model uses an air pump to deliver compressed air into the air inlet chamber, causing clamping plate 1 to abut the plastic mold against fixed plate 2 to perform the clamping operation. After the plastic mold is released, spring 1 abuts clamping plate 1 to release the mold, completing the mold release operation and improving the efficiency of the plastic mold clamping operation.

[0016] 2. The present invention provides a second clamping plate. During the clamping process of the plastic mold, the second clamping plate increases the clamping points and clamping area, thereby reducing the risk of the plastic mold falling off during the clamping process, thereby improving the safety of the clamping process;

[0017] 3. The utility model sets a locking mechanism to limit or allow the rotation of the second clamping plate, so that the user can adjust the angle of the plastic mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shows a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 Shows a schematic diagram of the main cutaway structure of the present invention;

[0020] Figure 3 Shown Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 A side structural diagram of the locking mechanism and the second fixing plate is shown;

[0022] Figure 5 A schematic side view of the structure of the abutment disc, the moving wheel, the plate body and the spring is shown;

[0023] Figure 6 A schematic diagram of the three-dimensional structure of the clamping plate 2 is shown.

[0024] In the figure: 1. Machine table; 2. Fixed plate 1; 3. Fixed plate 2; 4. Opening; 5. Separator; 6. Air inlet chamber; 7. Air outlet chamber; 8. Air pipe; 9. Air pump; 10. Pressure reducing valve; 11. Clamping rod; 12. Piston; 13. Clamping plate 1; 14. Clamping plate 2; 15. Spring 1; 16. Spring 2; 17. Spring 3; 18. Abutment plate; 19. Moving groove; 20. Guide rod; 21. Plate body; 22. Moving wheel; 23. Rubber part 1; 24. Rubber part 2; 25. Locking mechanism; 26. Locking rod; 27. Limiting plate; 28. Fixed plate 3; 29. ​​Locking port; 30. Clamping box. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] Example: See Figures 1 to 6The cam 14 is connected with the support 14 of the control cabinet 1 and the support 15, and the cam 14 is connected with the support 15 of the control cabinet 1. The cam 14 is connected with the support 15 of the control cabinet 1.

[0027] When a user needs to clamp a plastic mold using the pneumatic clamping mechanism described above, air pump 9 first delivers compressed air through air pipe 8 into air inlet chamber 6. As the air pressure in air inlet chamber 6 gradually increases, piston 12 is pushed by the pressure, driving clamping rod 11 along partition block 5 toward air outlet chamber 7. Simultaneously, spring 15 within air inlet chamber 6 is compressed by abutment plate 18, storing elastic potential energy. The movement of clamping rod 11 causes clamping plate 13 to gradually approach and eventually contact and clamp the plastic mold placed on machine table 1, forcing the mold to abut against fixing plate 2 3 for clamping. When the user needs to release the plastic mold, the pressure reducing valve 10 is operated to reduce the air pressure in the air inlet chamber 6. As the air pressure drops, the piston 12 is no longer subjected to sufficient thrust. At this time, the spring 15 releases the stored elastic potential energy, pushing the abutment plate 18 and the clamping rod 11 to move in opposite directions. The clamping plate 13 then releases the mold, completing the mold release operation and improving the efficiency of the plastic mold clamping operation.

[0028] It is understandable that the spring 15 located in the air outlet cavity 7 is provided to cushion the clamping plate 13 from excessive reset force.

[0029] In this embodiment, a movable groove 19 is opened along the length direction of the clamping box 30, and a guide rod 20 is fixed on the abutment disk 18 located in the air inlet chamber 6. The guide rod 20 is movable through a C-shaped plate 21, and a spring 2 16 is sleeved on the guide rod 20. The spring 2 16 is arranged between the abutment disk 18 and the plate body 21, and a movable wheel 22 is rotatably arranged between the two ends of the plate body 21; when the user finishes the clamping operation, the clamping plate 13 is reset to abut the abutment disk 18 located in the air outlet chamber 7. At this time, the movable wheel 22 will roll in the movable groove 19, which increases the stability of the abutment disk 18 during the moving activity, and also reduces the friction and resistance of the abutment disk 18 during the movement.

[0030] In this embodiment, an L-shaped clamping plate 2 14 is provided on the fixing plate 2 3; during the clamping process of the plastic mold, the clamping plate 2 14 reduces the risk of the plastic mold falling off during the clamping process by increasing the clamping points and the clamping area, thereby improving the safety of the clamping process.

[0031] In this embodiment, a rubber portion 123 is provided on the clamping plate 13, and a rubber portion 24 is provided on the clamping plate 2 14. The rubber portion 123 and the rubber portion 24 can increase the friction between the clamping plate 13 and the clamping plate 2 14 on the plastic mold, thereby ensuring that the mold will not fall off or move due to vibration or external force during the clamping process, thereby improving the stability of the clamping operation.

[0032] In this embodiment, the clamping plate 13 is rotatably connected to the clamping rod 11, and the clamping plate 2 14 is rotatably connected to the fixed plate 2 3. A locking mechanism 25 is provided between the clamping plate 2 14 and the fixed plate 2 3, which is used to selectively fix the clamping plate 2 14 and the fixed plate 2 3 relative to each other to limit or allow the clamping plate 2 14 to rotate relative to the fixed plate 2 3; when the user needs to adjust the plastic mold at multiple angles, first, the relative fixed state between the clamping plate 2 14 and the fixed plate 2 3 is released by the locking mechanism 25, and then, the clamping plate 2 14 is rotated to adjust the angle of the plastic mold between the clamping plate 1 13 and the clamping plate 2 14. After rotating the clamping plate 2 14 to the desired angle, the clamping plate 2 14 and the fixed plate 2 3 are fixed relative to each other again by the locking mechanism 25, so that the user can adjust the angle of the plastic mold.

[0033] In this embodiment, the locking mechanism 25 includes a locking rod 26, a limit plate 27, a spring three 17 and a fixed plate three 28; the fixed plate three 28 is L-shaped and fixed to the fixed plate two 3, the locking rod 26 movably passes through the second end of the fixed plate three 28, the limit plate 27 is sleeved on the locking rod 26, and is arranged between the fixed plate three 28 and the fixed plate two 3; the spring three 17 is sleeved on the locking rod 26, and the two ends of the spring three 17 elastically abut the limit plate 27 and the fixed plate three 28 respectively; the locking rod 26 movably passes through the fixed plate two 3, and the clamping plate two 14 is provided with a plurality of suitable When the user needs to relatively fix the clamping plate 14 and the fixing plate 3, first, release the locking rod 26. At this time, the spring 3 17 will elastically abut the limit plate 27, pushing the limit plate 27 and the locking rod 26 toward the fixing plate 3. In this process, the locking hole 29 on the clamping plate 14 is aligned with the position of the locking rod 26. The elastic force of the spring 3 17 will automatically insert the locking rod 26 into the locking hole 29. Once the locking rod 26 is fully inserted into the locking hole 29, it will firmly lock the clamping plate 14 on the fixing plate 3. When the user needs to release the relative fixation between the clamping plate 14 and the fixing plate 3, he only needs to pull the locking rod 26 to disengage the locking hole 29.

[0034] Working Principle: When a user needs to clamp a plastic mold, first, air pump 9 causes air pipe 8 to deliver compressed air into air inlet chamber 6. As the air pressure in air inlet chamber 6 gradually increases, piston 12 is pushed by the pressure, driving clamping rod 11 along partition block 5 toward air outlet chamber 7. Simultaneously, spring 15 within air inlet chamber 6 is compressed by abutment plate 18, storing elastic potential energy. The movement of clamping rod 11 causes clamping plate 13 to gradually approach and eventually contact and clamp the plastic mold placed on machine platform 1, forcing the mold to abut against fixed plate 2 3 for clamping. When the user needs to release the plastic mold, the pressure in the air inlet chamber 6 is reduced by operating the pressure reducing valve 10. As the air pressure drops, the piston 12 is no longer subjected to sufficient thrust. At this time, the spring 15 releases the stored elastic potential energy, pushing the abutment plate 18 and the clamping rod 11 to move in opposite directions. The clamping plate 13 then releases the mold, completing the mold release operation and improving the efficiency of the plastic mold clamping operation. When the user finishes the clamping operation, the clamping plate 13 returns to abut the abutment plate 18 located in the air outlet chamber 7. At this time, the moving wheel 22 will The second clamping plate 14 can increase the friction between the first clamping plate 13 and the second clamping plate 14, thereby increasing the friction between the first clamping plate 13 and the second clamping plate 14 and the plastic mold. or external force that causes the clamping plate 14 to fall off or move, thereby improving the stability of the clamping operation; when the user needs to adjust the plastic mold at multiple angles, first, the relative fixed state between the clamping plate 14 and the fixing plate 3 is released by the locking mechanism 25, and then the clamping plate 14 is rotated to adjust the angle of the plastic mold between the clamping plates 13 and 14. After the clamping plate 14 is rotated to the desired angle, the locking mechanism 25 is used again to fix the clamping plate 14 and the fixing plate 3 relative to each other, so that the user can adjust the angle of the plastic mold; When the user needs to relatively fix the clamping plate 2 14 and the fixing plate 2 3 , first, loosen the locking rod 26. At this time, the spring 3 17 will elastically abut the limit plate 27, pushing the limit plate 27 and the locking rod 26 toward the fixing plate 2 3. During this process, the locking hole 29 on the clamping plate 2 14 is aligned with the position of the locking rod 26. The elastic force of the spring 3 17 will automatically insert the locking rod 26 into the locking hole 29. Once the locking rod 26 is fully inserted into the locking hole 29, it will firmly lock the clamping plate 2 14 on the fixing plate 2 3. When the user needs to release the relative fixation between the clamping plate 2 14 and the fixing plate 2 3, he only needs to pull the locking rod 26 to disengage the locking hole 29.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic clamping mechanism for plastic mold processing, characterized in that: include: The machine (1) has a fixing plate 1 (2) and a fixing plate 2 (3) fixed at opposite ends thereof, a clamping box (30) fixed on the fixing plate 1 (2), and a first end of the clamping box (30) has an opening (4); a partition block (5) fixed in the clamping box (30) and dividing the clamping box (30) into an air inlet chamber (6) and an air outlet chamber (7); the air outlet chamber (7) is in communication with the opening (4); the air inlet chamber (6) is in communication with an air pump (9) via an air pipe (8); and a pressure reducing valve (10) in communication with the air inlet chamber (6) is provided on the clamping box (30); A clamping rod (11) is provided in the clamping box (30) and movably passes through the partition block (5); a piston (12) and a clamping plate (13) are fixed to both ends of the clamping rod (11); the piston (12) is provided in the air inlet chamber (6); a spring (15) is fixed to both sides of the partition block (5); the other ends of the two springs (15) are fixed to a contact plate (18) respectively, and the contact plate (18) is movably sleeved on the clamping rod (11).

2. The pneumatic clamping mechanism for plastic mold processing according to claim 1, characterized in that: A movable groove (19) is provided in the clamping box (30) along its length direction, and a guide rod (20) is fixed on the abutment disk (18) located in the air inlet chamber (6). The guide rod (20) is movable through a C-shaped plate (21). A second spring (16) is sleeved on the guide rod (20), and the second spring (16) is provided between the abutment disk (18) and the plate (21). A movable wheel (22) is rotatably provided between the two ends of the plate (21).

3. The pneumatic clamping mechanism for plastic mold processing according to claim 1, characterized in that: The second fixing plate (3) is provided with a second L-shaped clamping plate (14).

4. The pneumatic clamping mechanism for plastic mold processing according to claim 3, characterized in that: The first clamping plate (13) is provided with a rubber portion (23), and the second clamping plate (14) is provided with a rubber portion (24).

5. The pneumatic clamping mechanism for plastic mold processing according to claim 4, characterized in that: The clamping plate 1 (13) is rotatably connected to the clamping rod (11), and the clamping plate 2 (14) is rotatably connected to the fixed plate 2 (3). A locking mechanism (25) is provided between the clamping plate 2 (14) and the fixed plate 2 (3), which is used to selectively fix the clamping plate 2 (14) and the fixed plate 2 (3) relative to each other to limit or allow the clamping plate 2 (14) to rotate relative to the fixed plate 2 (3).

6. The pneumatic clamping mechanism for plastic mold processing according to claim 5, characterized in that: The locking mechanism (25) includes a locking rod (26), a limiting plate (27), a spring (17) and a fixing plate (28); The fixing plate three (28) is L-shaped and fixed on the fixing plate two (3); the locking rod (26) movably passes through the second end of the fixing plate three (28); the limiting plate (27) is sleeved on the locking rod (26) and is arranged between the fixing plate three (28) and the fixing plate two (3); The spring three (17) is sleeved on the locking rod (26), and the two ends of the spring three (17) elastically abut against the limit plate (27) and the fixing plate three (28) respectively; The locking rod (26) movably passes through the second fixing plate (3), and the second clamping plate (14) is provided with a plurality of locking openings (29) spaced apart along its rotation axis for the movably inserted locking rod (26).

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