Automatic adjusting clamp

Abstract

The utility model discloses an automatic adjusting clamp which comprises a first driving mechanism and a pair of guide rail mounting plates arranged in parallel, the two guide rail mounting plates are in transmission connection with the first driving mechanism, and the distance between the two guide rail mounting plates is adjusted through the first driving mechanism. A plurality of clamping jaw units arranged in the length direction are slidably arranged on the guide rail mounting plate, a second driving mechanism is fixedly mounted on each clamping jaw unit, and the output end of each second driving mechanism is in transmission connection with the guide rail mounting plate and is suitable for driving the corresponding clamping jaw unit to translate in the length direction of the guide rail mounting plate. The number of the clamping jaw units and the distance between the adjacent clamping jaw units can be automatically adjusted according to the size of a finished product to be encased and the encasing specification, the structure is simple, the manufacturing cost is low, one-key switching is achieved, labor is reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic packaging machinery, in particular to an automatic adjustment clamp. Background Art

[0002] As one of the commonly used automatic packaging equipment, the automatic case packer is used to pack finished products into boxes according to a certain arrangement and quantity. It is most widely used in the daily chemical industry. As the final execution unit of the automatic case packer, the fixture needs to be replaced frequently according to different finished product specifications and packing specifications. At present, the case packers used in China generally replace the fixtures manually or use the fixtures with quick-change disks to automatically switch the fixtures. The former uses manual replacement with high labor intensity, and the latter uses the fixtures with quick-change disks for automatic switching, which is more costly. With the development of society, the development requirements of enterprises have increased, and saving costs and reducing labor intensity have always been common improvement goals. Therefore, it is necessary to design an automatic adjustment fixture to solve the above problems. Utility Model Content

[0003] The purpose of the utility model is to propose an automatic adjustment clamp to address the deficiencies of the prior art, which can automatically adjust the number of clamping jaw units and the spacing between adjacent clamping jaw units according to the size of the finished product to be packed and the packing specifications. It has a simple structure and low manufacturing cost, and can achieve one-key switching, reduce labor and reduce costs.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] An automatic adjustment clamp comprises a first driving mechanism and a pair of guide rail mounting plates arranged in parallel, the two guide rail mounting plates are transmission-connected to the first driving mechanism and are suitable for adjusting the spacing through the first driving mechanism, a plurality of clamping jaw units arranged along the length direction are slidably provided on the guide rail mounting plates, a second driving mechanism is fixedly mounted on the clamping jaw units, an output end of the second driving mechanism is transmission-connected to the guide rail mounting plates and is suitable for driving the clamping jaw units to translate along the length direction of the guide rail mounting plates.

[0006] Furthermore, the second driving mechanism is a servo motor, the motor shaft of the servo motor is vertically arranged upward and a gear is coaxially fixedly installed thereon, a rack arranged along the length direction is fixedly installed at the bottom of the guide rail mounting plate, and the gear is meshed with the rack.

[0007] Furthermore, the gear is a helical gear.

[0008] Furthermore, both ends of the rack are provided with limit blocks fixedly mounted on the guide rail mounting plate.

[0009] Furthermore, the clamping jaw unit includes a top plate and a cylinder, the top of the cylinder body of the cylinder is fixedly connected to the bottom of the top plate, the bottom of the cylinder body is fixedly connected to a relatively arranged support plate, a pair of clamping jaws are rotatably connected between the support plates, the piston rod of the cylinder is vertically downwardly arranged and fixedly connected to a connecting block, and connecting rods are hinged between the two clamping jaws on both sides of the connecting block.

[0010] Furthermore, distance rods are vertically connected between the support plates.

[0011] Furthermore, first linear guide rails are symmetrically provided on both sides of the guide rail mounting plate, and the top of the clamping jaw unit is fixedly connected to the sliding block of the first linear guide rail.

[0012] Furthermore, it also includes a pair of parallel cross beams, both ends of the cross beams are vertically fixedly connected to longitudinal beams, the bottom of the longitudinal beams is fixedly connected to a second linear guide rail, one guide rail mounting plate is fixedly hoisted at the bottom of the cross beam on the corresponding side, and the other guide rail mounting plate is fixedly connected to the sliding block of the second linear guide rail; a screw adjustment assembly is connected between the two guide rail mounting plates, and the first driving mechanism is a servo motor and the motor shaft is connected to the screw adjustment assembly.

[0013] Furthermore, a connecting plate is fixedly connected between the cross beams, a reinforcing plate is provided on the top of the longitudinal beam, and two ends of the reinforcing plate are respectively fixedly connected to the two cross beams.

[0014] Furthermore, both ends of the second linear guide rail are provided with limit plates fixedly mounted on the longitudinal beam.

[0015] By adopting the above technical solution, the utility model has the following beneficial effects:

[0016] (1) The utility model realizes the adjustment of the spacing between the two guide rail mounting plates through the first driving mechanism, thereby realizing the adjustment of the spacing between the two columns of clamping jaw units, and drives the movement of the clamping jaw units in the same column through the second driving mechanism, thereby realizing the adjustment of the spacing between adjacent clamping jaw units in the same column, and then realizing automatic adjustment of the number of clamping jaw units and the spacing between adjacent clamping jaw units according to the size of the finished products to be packed and the packing specifications. The overall structure is simple, the manufacturing cost is low, and it can be switched with one button, which reduces labor and reduces costs.

[0017] (2) The second driving mechanism of the utility model adopts a servo motor, which drives the gear to rotate along the rack through the servo motor, thereby realizing the movement of the clamping claw unit along the length direction of the guide rail mounting plate.

[0018] (3) The gear of the utility model is a helical gear, which can eliminate the meshing blind area compared to the traditional spur gear, ensure the uniformity of the rotation speed, and make the translation of the clamping jaw unit more stable.

[0019] (4) The utility model provides a limit block to prevent the second drive mechanism from losing control, causing the gear to move beyond the travel range and fall off the rack, thereby improving the safety of equipment use.

[0020] (5) The clamping jaw unit of the utility model realizes the clamping function by extending and retracting the cylinder and driving the clamping jaw installed on the support plate to swing through the connecting rod. The structure is simple and the action response is fast.

[0021] (6) A distance rod is additionally provided between the two support plates of the utility model to play a certain supporting role and prevent the lower end of the support plate from being deformed and affecting the swing of the clamping claws.

[0022] (7) The utility model realizes the sliding connection between the clamping jaw unit and the guide rail mounting plate through a linear guide rail, thereby improving the smoothness of the sliding connection.

[0023] (8) The first driving mechanism of the utility model adopts a servo motor to drive the screw adjustment assembly to rotate, thereby driving one guide rail mounting plate to move closer to and away from the other guide rail mounting plate. The structure is simple and the movement is smooth.

[0024] (9) The utility model is provided with connecting plates and reinforcing plates to improve the overall structural strength.

[0025] (10) The utility model is provided with a limit plate to prevent the guide rail mounting plate from moving beyond the limit position and derailing, thereby improving the safety of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 It is a three-dimensional diagram of the utility model;

[0028] Figure 2 This is a schematic diagram of the matching structure of the gear and rack of the utility model;

[0029] Figure 3 It is a structural schematic diagram of the clamping jaw unit of the utility model.

[0030] The reference numerals in the accompanying drawings are:

[0031] The first driving mechanism 1, the guide rail mounting plate 2, the clamping jaw unit 3, the top plate 3-1, the cylinder 3-2, the support plate 3-3, the clamping jaw 3-4, the connecting block 3-5, the connecting rod 3-6, the distance rod 3-7, the second driving mechanism 4, the cross beam 5, the longitudinal beam 6, the second linear guide 7, the screw adjustment assembly 8, the connecting plate 9, the reinforcing plate 10, the first linear guide 11, the gear 12, the rack 13, the limit block 14, and the limit plate 15. DETAILED DESCRIPTION

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] (Example 1)

[0034] like Figures 1 to 3 The automatic adjustment fixture shown is installed on a cartoning machine, and includes a first driving mechanism 1 and a pair of guide rail mounting plates 2 arranged in parallel. Each guide rail mounting plate 2 is slidably provided with a plurality of clamping units 3 arranged along the length direction. The two guide rail mounting plates 2 are connected to the first driving mechanism 1 in a transmission manner. The spacing between the two guide rail mounting plates 2 is adjusted by the first driving mechanism 1, thereby achieving the spacing adjustment between the two rows of clamping units. A second driving mechanism 4 is fixedly installed on the clamping unit. The output end of the second driving mechanism is connected to the guide rail mounting plate 2 in a transmission manner. The second driving mechanism 4 drives the clamping unit 3 to translate along the length direction of the guide rail mounting plate 2, thereby achieving the spacing adjustment of adjacent clamping units in the same row. By superimposing the two sets of motions, the number of clamping units and the spacing between adjacent clamping units can be automatically adjusted according to the size of the finished product to be boxed and the boxing specifications. The overall structure is simple, the manufacturing cost is low, and it can be switched with one button, which reduces labor and reduces costs.

[0035] Specifically, a pair of parallel beams 5 are provided above the guide rail mounting plate 2, and longitudinal beams 6 are vertically fixedly connected to the two ends of the beams 5, and a second linear guide 7 is fixedly connected to the bottom of the longitudinal beam 6, one of the guide rail mounting plates 2 is fixedly hoisted at the bottom of the beam 5 on the corresponding side, and the other guide rail mounting plate is fixedly connected to the sliding block of the second linear guide 7. A screw adjustment assembly 8 is connected between the two guide rail mounting plates 2, and the first driving mechanism 1 is a servo motor and the motor shaft is connected to the screw adjustment assembly 8. The screw adjustment assembly 8 is driven to rotate by the servo motor, thereby driving one of the guide rail mounting plates 2 to approach and move away from the other guide rail mounting plate 2, with a simple structure and smooth movement. In order to improve the stability of the overall structure, a connecting plate 9 is fixedly connected between the two beams 5 in this embodiment, and a reinforcing plate 10 is provided on the top of the longitudinal beam 6, and the two ends of the reinforcing plate 10 are respectively fixedly connected to the two beams 5 to improve the overall structural strength.

[0036] The clamping jaw unit 3 includes a top plate 3-1, a cylinder 3-2, a support plate 3-3, a clamping jaw 3-4, a connecting block 3-5 and a connecting rod 3-6. The first linear guide rails 11 are symmetrically arranged on both sides of the bottom of each guide rail mounting plate 2. The top plate 3-1 is fixedly connected to the sliding block of the first linear guide rail, thereby realizing the sliding connection between the clamping jaw unit 3 and the guide rail mounting plate 2. The top of the cylinder body of the cylinder 3-2 is fixedly connected to the bottom of the top plate 3-1, and the support plate 3-3 is provided with two and symmetrically and vertically fixedly installed at the bottom of the cylinder body. The clamping jaw 3-4 is also provided with a pair and is respectively rotatably installed between the two supporting plates 3-3 through a pin shaft. The piston rod of the cylinder 3-2 is vertically arranged downward and fixedly connected to the connecting block 3-5. The two sides of the connecting block 3-5 are hinged to the top of the clamping jaw 3-4 through the connecting rod 3-6. Through the extension and retraction of the cylinder 3-2, the clamping jaw 3-4 is driven to swing through the connecting rod 3-6, thereby realizing the clamping function, with a simple structure and rapid action response. A distance rod 3-7 is vertically connected between the lower parts of the two support plates 3-3 to play a certain supporting role and prevent the lower end of the support plate 3-3 from deforming and affecting the swing of the clamping claw 3-4.

[0037] The second driving mechanism 4 is a servo motor fixedly mounted on the top plate 3-1. The motor shaft of the servo motor is vertically arranged upward and coaxially fixedly mounted with a gear 12. A rack 13 arranged along the length direction is fixedly mounted at the bottom of the guide rail mounting plate 2, and the gear 12 is meshed with the rack 13. The servo motor drives the gear 12 to rotate along the rack 13, thereby realizing the movement of the clamping unit 3 along the length direction of the guide rail mounting plate 2. In order to improve the stability of the translational movement of the clamping unit 3, the gear 12 of this embodiment adopts a helical gear, which can eliminate the meshing blind area compared with the traditional spur gear, ensure the uniformity of the rotation speed, and make the translation of the clamping unit 3 more stable.

[0038] In order to improve the safety of equipment use, this embodiment provides limit blocks 14 fixedly mounted on the guide rail mounting plate 2 at both ends of the rack 13 to prevent the second drive mechanism 4 from losing control and causing the gear 12 to move beyond the stroke range and fall off the rack 13; at the same time, limit plates 15 fixedly mounted on the longitudinal beam 6 are provided at both ends of the second linear guide rail 7 to prevent the guide rail mounting plate 2 from moving beyond the limit position and derailing, thereby improving the safety of translational movement.

[0039] In this embodiment, the spacing between the two guide rail mounting plates 2 is adjusted by the first driving mechanism 1, thereby adjusting the spacing between the two columns of clamping jaw units 3. The second driving mechanism 4 drives the movement of the clamping jaw units 3 in the same column, thereby adjusting the spacing between adjacent clamping jaw units 3 in the same column, and then automatically adjusting the number of clamping jaw units and the spacing between adjacent clamping jaw units according to the size of the finished products to be packed and the packing specifications. The overall structure is simple, the manufacturing cost is low, and it can be switched with one button, which reduces labor and reduces costs.

[0040] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic adjustment fixture, characterized in that: It includes a first driving mechanism and a pair of guide rail mounting plates arranged in parallel, the two guide rail mounting plates are transmission connected to the first driving mechanism and are suitable for adjusting the spacing through the first driving mechanism, a plurality of clamping jaw units arranged along the length direction are slidably provided on the guide rail mounting plates, a second driving mechanism is fixedly installed on the clamping jaw units, the output end of the second driving mechanism is transmission connected to the guide rail mounting plates and is suitable for driving the clamping jaw units to translate along the length direction of the guide rail mounting plates.

2. The automatic adjustment fixture according to claim 1, characterized in that: The second driving mechanism is a servo motor, the motor shaft of the servo motor is vertically arranged upward and coaxially fixed with a gear, the bottom of the guide rail mounting plate is fixedly installed with a rack arranged along the length direction, and the gear is meshed with the rack.

3. The automatic adjustment fixture according to claim 2, characterized in that: The gear is a helical gear.

4. The automatic adjustment fixture according to claim 2, characterized in that: Both ends of the rack are provided with limit blocks fixedly mounted on the guide rail mounting plate.

5. The automatic adjustment fixture according to claim 1, characterized in that: The clamping jaw unit includes a top plate and a cylinder, wherein the top of the cylinder body is fixedly connected to the bottom of the top plate, the bottom of the cylinder body is fixedly connected to a relatively arranged support plate, a pair of clamping jaws are rotatably connected between the support plates, the piston rod of the cylinder is vertically downwardly arranged and fixedly connected to a connecting block, and connecting rods are hinged between the two clamping jaws on both sides of the connecting block.

6. The automatic adjustment fixture according to claim 5, characterized in that: Distance rods are vertically connected between the support plates.

7. The automatic adjustment fixture according to claim 1, characterized in that: First linear guide rails are symmetrically arranged on both sides of the guide rail mounting plate, and the top of the clamping jaw unit is fixedly connected to the sliding block of the first linear guide rail.

8. The automatic adjustment fixture according to claim 1, characterized in that: It also includes a pair of parallel cross beams, both ends of the cross beams are vertically fixedly connected to longitudinal beams, the bottom of the longitudinal beams is fixedly connected to a second linear guide rail, one guide rail mounting plate is fixedly hoisted at the bottom of the cross beam on the corresponding side, and the other guide rail mounting plate is fixedly connected to the sliding block of the second linear guide rail; a screw adjustment assembly is connected between the two guide rail mounting plates, and the first driving mechanism is a servo motor and the motor shaft is connected to the screw adjustment assembly.

9. The automatic adjustment fixture according to claim 8, characterized in that: A connecting plate is fixedly connected between the cross beams, a reinforcing plate is provided on the top of the longitudinal beam, and two ends of the reinforcing plate are respectively fixedly connected to the two cross beams.

10. The automatic adjustment fixture according to claim 8, characterized in that: Both ends of the second linear guide rail are provided with limit plates fixedly mounted on the longitudinal beam.

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