Pneumatic pressing clamp

Abstract

The utility model relates to the field of pressing clamps, and discloses a pneumatic pressing clamp which comprises a clamp body, a fixing piece, a piston, a pressing plate and a base, the fixing piece is arranged on the surface of one side of the clamp body, and a hydraulic assembly is arranged on the surface of one side of the fixing piece; a buffer assembly is fixedly connected to the surface of one side of the interior of the hydraulic assembly and comprises a fixing seat, a groove is formed in the center of the fixing seat, and a buffer pad is connected to one side of the groove in a sticky mode. Due to the fact that the installation base is arranged on the top face of the hydraulic cylinder body and the abrasion-resistant pad is arranged on the inner surface of the installation base, direct contact between the hydraulic rod and the hydraulic cylinder body is reduced, and therefore abrasion caused by friction is reduced. And the hydraulic rod is prevented from directly impacting the bottom of the hydraulic cylinder body during movement, so that friction and abrasion caused by impact between the bottom of the hydraulic rod and the bottom of the inner side of the hydraulic cylinder body are remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the field of pressing fixtures, in particular to a pneumatic pressing fixture. Background Art

[0002] Pneumatic clamping fixtures are widely used in machining, assembly, welding, and testing processes. They play a particularly important role in production environments that require high precision, high efficiency, and high automation. For example, they are widely used in automotive parts manufacturing, electronics assembly, and precision instrument processing.

[0003] Pneumatic clamps primarily consist of a hydraulic cylinder, hydraulic rod, clamping components, and a pressure plate. When air is delivered to the clamp through the air system, the air pressure drives the piston, which in turn causes the hydraulic assembly to generate a pressing force in the clamp's clamping components, ultimately closing the workpiece.

[0004] However, in the process of implementing the technical solutions of the embodiments of the present application, the inventors of the present application discovered that the above technology has at least the following technical problems:

[0005] When the hydraulic rod reciprocates in the cylinder, the contact and friction with the inner wall of the cylinder will cause wear on the surface of the hydraulic rod, reducing its working performance and life. When the hydraulic rod is moving, its bottom will hit the inner bottom of the cylinder. This impact will generate a momentary impact force, causing wear on the bottom of the hydraulic rod and the bottom of the cylinder. Utility Model Content

[0006] The embodiment of the present application solves the problems in the prior art caused by the wear between the surface of the hydraulic rod and the inner wall of the cylinder body when the hydraulic rod moves, and the wear caused by the collision between the bottom of the hydraulic rod and the bottom of the cylinder body when the hydraulic rod moves, by providing a pneumatic pressing clamp. It reduces the wear between the hydraulic rod and the inner wall of the cylinder body, and reduces the wear caused by the collision between the bottom of the hydraulic rod and the bottom of the cylinder body, thereby improving the service life of the hydraulic component.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The utility model discloses a pneumatic pressing fixture, comprising a fixture body, a fixing piece, a piston, a pressing plate and a base. A fixing piece is provided on one side surface of the fixture body, and a hydraulic assembly is provided on one side surface of the fixing piece.

[0009] The hydraulic assembly includes a hydraulic cylinder body, a second limiting hole is provided at the center of the top surface of the hydraulic cylinder body, two groups of second sockets are symmetrically provided on the top surface of the hydraulic cylinder body, a mounting seat is provided on the top surface of the hydraulic cylinder body, a first limiting hole is provided at the center of the top surface of the mounting seat, two groups of first sockets are symmetrically provided on the top surface of the mounting seat, the first socket is threadedly connected with a first bolt, the first bolt passes through the first socket and the second socket, two groups of wear-resistant pads are symmetrically provided inside the mounting seat, a hydraulic rod is provided inside the first limiting hole, the wear-resistant pad is fitted with the hydraulic rod, the hydraulic rod passes through the first limiting hole and the second limiting hole, a bottom pad is provided on the bottom side surface of the hydraulic rod, a buffer assembly is fixedly connected to the inner side surface of the hydraulic assembly, and the buffer assembly includes a fixing seat, a groove is provided at the center of the fixing seat, and a buffer pad is adhesively connected to one side of the groove.

[0010] As an optimal technical solution of the present invention, the mounting seat is attached to the top of the hydraulic cylinder body, the diameter of the mounting seat is smaller than the diameter of the top surface of the hydraulic cylinder body, the diameter size of the first limiting hole and the second limiting hole are the same, and the diameter size of the first limiting hole and the second limiting hole is larger than the hydraulic rod.

[0011] As a preferred technical solution of the present invention, threads are provided inside the first and second sockets, the first and second sockets have the same diameter, and the first and second sockets are located on the same vertical line.

[0012] As a preferred technical solution of the present invention, the first bolt is a hexagon socket bolt with the same size as the first insertion hole and the second insertion hole, and the two groups of first bolts are arranged in parallel.

[0013] As a preferred technical solution of the present invention, the wear-resistant pad is adhesively connected to the mounting seat, and the wear-resistant pad is made of rubber.

[0014] As a preferred technical solution of the present invention, the fixing seat is welded to the central portion of the bottom of the inner surface of the hydraulic cylinder body, and the diameter of the groove is larger than the diameter of the hydraulic rod.

[0015] As an optimal technical solution of the present invention, the hydraulic rod and the base pad are adhesively connected, the size of the bottom surface of the base pad is the same as the size of the bottom surface of the hydraulic rod, a pressing piece is provided on the top of the hydraulic rod, and the hydraulic rod is welded to the middle part of the pressing piece.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0017] 1. Since a mounting seat is provided on the top surface of the hydraulic cylinder body and a wear-resistant pad is provided on the inner surface of the mounting seat, direct contact between the hydraulic rod and the hydraulic cylinder body is avoided, thereby reducing the wear caused by friction. By providing a buffer assembly at the bottom inner side of the hydraulic cylinder body and a bottom pad at the bottom of the hydraulic rod, the hydraulic rod is prevented from directly hitting the bottom of the hydraulic cylinder body when it moves, thereby significantly reducing the friction and wear caused by the collision between the bottom of the hydraulic rod and the bottom inner side of the hydraulic cylinder body. Therefore, it effectively solves the wear between the surface of the hydraulic rod and the inner wall of the cylinder body when the hydraulic rod moves and the wear caused by the collision between the bottom of the hydraulic rod and the bottom inner side of the cylinder body when the hydraulic rod moves in the prior art, thereby reducing the friction and loss generated when the hydraulic rod moves, and the friction and wear caused by the impact of the hydraulic rod against the bottom inner side of the hydraulic cylinder body when the hydraulic rod moves, thereby improving the service life of the hydraulic rod and the hydraulic cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a partial structural cross-sectional view of the hydraulic assembly of the utility model;

[0021] Figure 3 This utility model Figure 2 A magnified view of part A in FIG;

[0022] Figure 4 This utility model Figure 2 A magnified view of part B in FIG;

[0023] In the figure: 1. Hydraulic assembly; 101. Hydraulic cylinder body; 102. Second limiting hole; 103. Second insertion hole; 104. Mounting seat; 105. First limiting hole; 106. First insertion hole; 107. First bolt; 108. Wear-resistant pad; 109. Hydraulic rod; 110. Bottom pad; 111. Pressing part; 2. Buffer assembly; 201. Fixed seat; 202. Groove; 203. Buffer pad; 3. Clamp body; 4. Fixed part; 5. Base; 6. Piston; 7. Pressure plate. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0025] In the drawings, the same reference numerals all refer to the same components. Example

[0026] like Figure 1-4 As shown, the present invention provides a pneumatic pressing fixture, comprising a fixture body 3, a fixing member 4, a piston 6, a pressure plate 7 and a base 5. The fixing member 4 is provided on one side surface of the fixture body 3, and the hydraulic assembly 1 is provided on one side surface of the fixing member 4.

[0027] The hydraulic assembly 1 includes a hydraulic cylinder body 101, a second limiting hole 102 is provided at the center of the top surface of the hydraulic cylinder body 101, two groups of second plug holes 103 are symmetrically provided on the top surface of the hydraulic cylinder body 101, a mounting seat 104 is provided on the top surface of the hydraulic cylinder body 101, a first limiting hole 105 is provided at the center of the top surface of the mounting seat 104, two groups of first plug holes 106 are symmetrically provided on the top surface of the mounting seat 104, the first plug hole 106 is threadedly connected with a first bolt 107, the first bolt 107 passes through the first plug hole 106 and the second plug hole 103, and the mounting seat 104 is provided with a first bolt 107. Two groups of wear-resistant pads 108 are symmetrically arranged inside the seat 104, and a hydraulic rod 109 is arranged inside the first limiting hole 105. The wear-resistant pad 108 is fitted with the hydraulic rod 109, and the hydraulic rod 109 passes through the first limiting hole 105 and the second limiting hole 102. A bottom pad 110 is provided on the bottom side surface of the hydraulic rod 109. A buffer component 2 is fixedly connected to the inner side surface of the hydraulic component 1. The buffer component 2 includes a fixed seat 201, and a groove 202 is provided at the center of the fixed seat 201. A buffer pad 203 is adhesively connected to one side of the groove 202.

[0028] Specifically, the first limiting hole 105 and the second limiting hole 102 are used to install the hydraulic rod 109, the first plug hole 106 and the second plug hole 103 are used to install the first bolt 107, the first bolt 107 is used to be inserted into the second plug hole 103 through the first plug hole 106, and the mounting seat 104 is fixed to the top surface of the hydraulic cylinder body 101. The interior of the mounting seat 104 is hollowed out and a wear-resistant pad 108 is installed at the hollowed-out part. The hydraulic rod 109 contacts and rubs with the wear-resistant pad 108 when it moves up and down. The hydraulic rod 109 does not contact the hydraulic cylinder body 101 and the mounting seat 104. The wear-resistant pad 108 prevents the hydraulic rod 109 from contacting the hydraulic cylinder body 101 and the mounting seat 104. The direct contact between the cylinder body 101 reduces the wear caused by friction. When the hydraulic rod 109 moves up and down, it will fit with the buffer pad 203 inside the groove 202. When the hydraulic rod 109 fits with the inside of the groove 202, the bottom pad 110 at the bottom of the hydraulic rod 109 will fit with the buffer pad 203 inside the groove 202. The buffer pad 203 can play a buffering role when the hydraulic rod 109 contacts the bottom of the hydraulic cylinder body 101, reducing the impact force caused by direct collision. The buffer pad 203 is made of rubber and can absorb part of the kinetic energy of the hydraulic rod 109 and reduce the impact pressure.

[0029] The mounting seat 104 is attached to the top of the hydraulic cylinder body 101. The diameter of the mounting seat 104 is smaller than the diameter of the top surface of the hydraulic cylinder body 101. The diameter of the first limiting hole 105 and the second limiting hole 102 are the same. The diameter of the first limiting hole 105 and the second limiting hole 102 are larger than the hydraulic rod 109.

[0030] Specifically, the diameter of mounting base 104 is smaller than the diameter of the top surface of hydraulic cylinder body 101, providing a certain degree of edge support, enhancing the stability of mounting base 104 and preventing deformation or damage due to uneven force. The smaller diameter mounting base 104 can be more easily positioned and secured to the top of hydraulic cylinder body 101, reducing adjustment and calibration work during installation and improving installation efficiency.

[0031] The first plug hole 106 and the second plug hole 103 are provided with threads inside. The first plug hole 106 and the second plug hole 103 have the same diameter. The first plug hole 106 and the second plug hole 103 are located on the same vertical line.

[0032] Specifically, first insertion hole 106 and second insertion hole 103 are located on the same vertical line. This alignment ensures accurate alignment and insertion of first bolt 107, avoiding installation problems caused by misalignment or tilting. Furthermore, being located on the same vertical line improves connection stability and accuracy, ensuring the proper operation of the device or structure.

[0033] The first bolts 107 are hexagon socket bolts with the same size as the first insertion holes 106 and the second insertion holes 103 . The two groups of first bolts 107 are arranged in parallel.

[0034] Specifically, due to the large contact area of ​​the six corners of the hexagon socket bolt head, the torque transmission efficiency is higher. Under the same torque application, the hexagon socket bolt can provide a more stable tightening force, further reducing the occurrence of loosening. When two sets of parallel first bolts 107 and screw holes are used, it can be ensured that when the mounting base is subjected to external force, the two sets of bolts can evenly share the load, thereby avoiding damage or deformation caused by excessive force on a single point, and the parallel bolts and screw holes can provide a more stable connection structure. This structure can maintain good stability when subjected to external forces such as vibration and impact, reducing the possibility of loosening and displacement. The parallel bolts and screw holes make the installation and disassembly process more convenient and quick. When installing or disassembling, the user can operate the two sets of bolts at the same time to improve work efficiency.

[0035] The wear-resistant pad 108 is connected to the mounting seat 104 by adhesive, and the wear-resistant pad 108 is made of rubber.

[0036] Specifically, the design of the wear-resistant pad 108 being made of rubber and being adhesively connected to the mounting seat 104 has the advantages of strong wear resistance, high elasticity, good anti-slip performance, strong acid and alkali resistance, easy installation and strong adaptability.

[0037] The fixing seat 201 is welded to the center of the bottom of the inner surface of the hydraulic cylinder body 101 , and the diameter of the groove 202 is larger than the diameter of the hydraulic rod 109 .

[0038] Specifically, groove 202 is located at the center of the bottom inner surface of hydraulic cylinder body 101. This ensures that hydraulic rod 109 remains centered during extension and retraction, reducing deflection and friction, thereby improving the stability and efficiency of the hydraulic assembly. The diameter of groove 202 is larger than that of hydraulic rod 109, providing sufficient space for hydraulic rod 109 to extend and retract smoothly, reducing jamming and wear.

[0039] The hydraulic rod 109 is adhesively connected to the bottom pad 110. The size of the bottom surface of the bottom pad 110 is the same as that of the bottom surface of the hydraulic rod 109. A pressing piece 111 is provided on the top of the hydraulic rod 109, and the hydraulic rod 109 is welded to the middle part of the pressing piece 111.

[0040] Working principle: When the hydraulic rod 109 moves up and down along the hydraulic cylinder body 101, the surface of the hydraulic rod 109 will fit and rub against the wear-resistant pad 108. The wear-resistant pad 108 avoids direct contact between the hydraulic rod 109 and the hydraulic cylinder body 101, thereby reducing the wear caused by friction. When the hydraulic rod 109 moves to the bottom inside the hydraulic cylinder body 101, the bottom of the hydraulic rod 109 will hit the center of the fixed seat, and the bottom pad 110 at the bottom of the hydraulic rod 109 will fit with the buffer pad 203 on one side of the fixed seat. The bottom pad 110 and the buffer pad 203 can play a buffering role when the hydraulic rod 109 contacts the bottom of the hydraulic cylinder body 101, reducing the impact force caused by direct impact.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pneumatic pressing fixture, comprising a fixture body (3), a fixing member (4), a piston (6), a pressing plate (7) and a base (5), characterized in that: A fixing member (4) is provided on one side surface of the clamp body (3), and a hydraulic assembly (1) is provided on one side surface of the fixing member (4); The hydraulic assembly (1) includes a hydraulic cylinder body (101), a second limiting hole (102) is provided at the center of the top surface of the hydraulic cylinder body (101), two groups of second plug holes (103) are symmetrically provided on the top surface of the hydraulic cylinder body (101), a mounting seat (104) is provided on the top surface of the hydraulic cylinder body (101), a first limiting hole (105) is provided at the center of the top surface of the mounting seat (104), two groups of first plug holes (106) are symmetrically provided on the top surface of the mounting seat (104), the first plug hole (106) is threadedly connected with a first bolt (107), the first bolt (107) passes through the first plug hole (106) and the second plug hole (103), the mounting seat (104) is provided with a first bolt (107), and the first bolt (107) passes through the first plug hole (106) and the second plug hole (103). Two groups of wear-resistant pads (108) are symmetrically arranged inside the seat (104), a hydraulic rod (109) is arranged inside the first limiting hole (105), the wear-resistant pad (108) is fitted with the hydraulic rod (109), the hydraulic rod (109) passes through the first limiting hole (105) and the second limiting hole (102), a bottom pad (110) is arranged on one side surface of the bottom of the hydraulic rod (109), a buffer assembly (2) is fixedly connected to one side surface of the inner side of the hydraulic assembly (1), the buffer assembly (2) includes a fixed seat (201), a groove (202) is arranged at the center of the fixed seat (201), and a buffer pad (203) is adhesively connected to one side of the groove (202).

2. A pneumatic pressing fixture according to claim 1, characterized in that: The mounting seat (104) is fitted on the top of the hydraulic cylinder body (101), the diameter of the mounting seat (104) is smaller than the diameter of the top surface of the hydraulic cylinder body (101), the first limiting hole (105) and the second limiting hole (102) have the same diameter, and the diameter of the first limiting hole (105) and the second limiting hole (102) are larger than the hydraulic rod (109).

3. The pneumatic pressing fixture according to claim 1, characterized in that: The first plug hole (106) and the second plug hole (103) are provided with threads inside, the first plug hole (106) and the second plug hole (103) have the same diameter, and the first plug hole (106) and the second plug hole (103) are located on the same vertical line.

4. The pneumatic pressing fixture according to claim 1, characterized in that: The first bolt (107) is a hexagon socket bolt having the same size as the first insertion hole (106) and the second insertion hole (103), and the two groups of first bolts (107) are arranged in parallel.

5. The pneumatic pressing fixture according to claim 1, characterized in that: The wear-resistant pad (108) is in adhesive connection with the mounting seat (104), and the wear-resistant pad (108) is made of rubber.

6. The pneumatic pressing fixture according to claim 1, characterized in that: The fixing seat (201) is welded to the central portion of the bottom of the inner surface of the hydraulic cylinder body (101), and the diameter of the groove (202) is larger than the diameter of the hydraulic rod (109).

7. The pneumatic pressing fixture according to claim 1, characterized in that: The hydraulic rod (109) and the bottom pad (110) are adhesively connected. The size of the bottom surface of the bottom pad (110) is the same as the size of the bottom surface of the hydraulic rod (109). A pressing piece (111) is provided on the top of the hydraulic rod (109). The hydraulic rod (109) is welded to the middle part of the pressing piece (111).

Images