Modularized integrated clamping and fixing unit and welding clamp gripper equipment

Abstract

The utility model belongs to the technical field of body-in-white welding fixtures, and particularly relates to a modular integrated clamping and fixing unit and welding fixture gripper equipment, which comprises a power element, a clamping module and a shell mounting piece, the power element is provided with a connecting rod; the shell mounting piece is arranged on the outer side of the clamping module; the clamping module is arranged on the power element; the clamping module comprises a pressing block, a supporting block, an internal connecting block and a hinge assembly, the supporting block is arranged at the top of the shell mounting part, the internal connecting block is in transmission connection with the connecting rod, and the pressing block is connected with the internal connecting block through the hinge assembly and used for driving the pressing block to move when the power element operates. A cylinder or a motor can be integrated to serve as a power element, the overall structure of the fixing unit is simplified, the unit is simple, convenient to clean and attractive, and meanwhile the advantage of saving unit design space is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of body-in-white welding fixtures, and in particular relates to a modular integrated clamping and fixing unit and a welding fixture gripper device. Background Art

[0002] With the planning and development of China's automobile welding industry, in the workshops of automobile welding production lines in the field of industrial production, with the gradual improvement of industrial technology, the application of welding fixture grippers and vision-guided grippers is becoming more and more extensive, and the structural design is increasingly inclined to simplification, standardization, modularization and integration.

[0003] However, the clamping and fixing units on the current welding fixture gripper equipment are generally assembled using telescopic or clamping cylinders with positioning pins, connecting blocks, pressure arms, vertical plates and other non-standard self-made parts and other purchased parts. Compared with the simple modular integrated units, the current equipment units have the disadvantages of high design cost, large structural space occupation, high production and manufacturing cost, and long debugging time. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a modular integrated clamping and fixing unit to solve the shortcomings of the current equipment unit, such as high design cost, large structural space occupation, high production cost, and long debugging time.

[0005] The utility model provides a modular integrated clamping and fixing unit, comprising a power element, a clamping module and a housing mounting piece;

[0006] The power element is provided with a connecting rod;

[0007] The housing mounting member is disposed outside the clamping module;

[0008] The clamping module is arranged on the power element; the clamping module includes a pressure block, a support block, an internal connection block and a hinge assembly, the support block is arranged on the top of the shell mounting member, the internal connection block is transmission-connected to the connecting rod, the pressure block is connected to the internal connection block through the hinge assembly, and is used to drive the pressure block when the power element is running, so that the pressure block clamps the workpiece on the support block.

[0009] Preferably, the clamping module also includes a first sleeve, a first limit block and a first compression spring, the first sleeve is arranged in the outer shell mounting member, the first limit block is slidably arranged along the first sleeve, and the first limit block is rotatably connected to the internal connecting block to limit the moving stroke of the internal connecting block; the first compression spring is arranged between the first limit block and the pressure block to push the pressure block to open outward.

[0010] Preferably, the pressure block is a three-claw positioning block, and the three-claw positioning block includes three positioning hook units, and the three positioning hook units are arranged in a circular array with the connecting rod as the center, and the support block is arranged in a ring shape, and the three-claw positioning block passes through the support block; the three-claw positioning block switches to an expanded state or a retracted state when the power element is running.

[0011] Preferably, the pressing block also includes a connecting member, one end of which is provided with a waist-shaped hole, and the hinge assembly is slidably set in the waist-shaped hole, and the other end of the connecting member is used to set the pressing block, which is used to transmit the connecting member to rotate the pressing block downward or upward when the hinge assembly moves in the waist-shaped hole.

[0012] Preferably, the support block comprises a base and a positioning pin, and a side surface of the positioning pin is provided with an opening, and the opening penetrates from the side surface of the positioning pin to the bottom of the base;

[0013] The clamping module further comprises a second sleeve and a second limit block, wherein the second sleeve is arranged in the housing mounting member, the second limit block is slidably arranged along the second sleeve, and the hinge assembly is rotatably connected to the second limit block to limit the movement stroke of the internal connection block;

[0014] The pressing block is arranged in the opening; when the pressing block is used to clamp a workpiece, the pressing block extends from the opening under the push of the connecting rod, and the pressing block rotates around the hinge assembly and presses down on the workpiece to position and clamp the workpiece on the top of the base.

[0015] Preferably, the clamping module further comprises a third limit block and a second compression spring, the third limit block is slidably disposed in the housing mounting member, the connecting member is rotatably connected to the third limit block; the second compression spring is disposed between the third limit block and the internal connecting block;

[0016] The support block is arranged on the top of the shell mounting member through a stop block component, and the connecting member extends out from the stop block component; when the pressure block is used to clamp the workpiece, the third limit block moves along the pushing direction of the connecting rod to abut against the stop block component, and the connecting member is pushed by the connecting rod and rotates and presses down around the hinge assembly, and the pressure block is pressed down on the workpiece to position and clamp the workpiece on the top of the support block.

[0017] Preferably, the clamping module further comprises a fourth limit block and a third compression spring; the fourth limit block is fixedly arranged in the housing mounting member, and the connecting member is rotatably connected to the fourth limit block; the third compression spring is arranged between the fourth limit block and the internal connecting block;

[0018] When the pressing block is used to clamp a workpiece, the connecting member is pushed by the connecting rod to rotate and press downward around the hinge assembly, and the pressing block is pressed downward to position and clamp the workpiece on the top of the support block, so as to shorten the moving stroke of the connecting rod.

[0019] Preferably, the internal connection block comprises a first connection segment and a second connection segment, the first connection segment is transmission-connected to the connection rod, and the second connection segment is connected to the hinge assembly;

[0020] The clamping module further comprises a self-locking unit, which is arranged on one side of the housing mounting member; the self-locking unit is composed of a self-locking adjustment block, a fourth compression spring and a self-locking block, the self-locking adjustment block, the self-locking block faces the internal connecting block, the fourth compression spring is arranged between the self-locking block and the self-locking adjustment block, and the self-locking adjustment block is used to adjust the compression state of the fourth compression spring;

[0021] When the pressure block is used to clamp the workpiece, the connecting member is rotated and pressed down around the hinge assembly under the push of the second connecting segment, and the pressure block is pressed down to position and clamp the workpiece on the top of the support block. The fourth compression spring pushes the self-locking block to engage and limit the second connecting segment, so that the self-locking unit locks the pressure block in a clamped state.

[0022] Preferably, a detachable unit protection cover is also provided on one side of the housing mounting piece.

[0023] Preferably, the clamping module further comprises a shaft fixing member, the shaft fixing member is arranged on the housing mounting member, the support block is coaxially arranged with the shaft fixing member; the pressing block extends from the center of the support block and the shaft fixing member;

[0024] When the pressing block is used to clamp a workpiece, the pressing block is driven by the connecting rod to rotate and press downward around the hinge assembly, and the pressing block is pressed downward to position and clamp the workpiece on the top of the supporting block.

[0025] The utility model also points out a welding fixture gripper device, which comprises a modular integrated clamping and fixing unit as described in any one of the above-mentioned multiple solutions.

[0026] It can be seen from the above technical solutions that the embodiments of the utility model have the following advantages:

[0027] 1. The modular integrated clamping and fixing unit includes a power element, a clamping module and a housing mounting part, that is, a cylinder or a motor can be integrated as a power element to simplify the overall structure of the fixing unit, and the position state of the pressure block can be changed by the hinge assembly to narrow the opening state range, forming a modular positioning fixture product; while the unit is simple, clean and beautiful, it has the advantage of saving unit design space.

[0028] 2. When the three-jaw positioning block is used as a pressure block, the arc design of the three-jaw positioning block on the corresponding workpiece positioning hole realizes the positioning function of the workpiece, that is, the positioning and clamping functions of the workpiece with a large round hole are realized through a three-jaw clamping and positioning unit.

[0029] 3. In the solution where the support block includes a base and a positioning pin, the positioning and clamping function of a hole of the workpiece can be achieved through simple internal connection and limit functions, thereby simplifying the design unit.

[0030] 4. In the solution where the clamping module includes a third limit block and a second compression spring, the movable space of the third limit block is used to control the opening state of the clamping module within the clamping state position, so that the unit can be applied to working conditions with smaller space.

[0031] 5. In the solution where the clamping module also includes a fourth limit block and a third compression spring, the position of the fourth limit block is fixed, so that the modular integrated clamping and fixing unit can use a power element with an extremely short stroke to achieve the clamping and opening of the unit, saving the purchase cost of the unit.

[0032] 6. In the scheme of setting a self-locking unit on one side of the housing mounting part, the self-locking block, under the action of the fourth compression spring, always has a force along the fourth compression spring toward the inside of the unit. When the pressure block is used to clamp the workpiece, the self-locking unit locks the pressure block in a clamped state; when the power element runs to drive the internal connecting block to move and pushes away the self-locking block that is stuck in the first connecting segment, the unit can reach an open state to release the clamping of the workpiece. This scheme can achieve the effect of locking the unit in a clamped state.

[0033] 7. The support block is fixed to the shaft fixing part by means of a top screw, so as to facilitate quick replacement and maintenance when the support block is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 A schematic diagram showing the three-dimensional structure of a fixing unit according to Embodiment 2 of the present utility model;

[0036] Figure 2 A schematic diagram showing a clamping state of a fixing unit according to Embodiment 2 of the present utility model;

[0037] Figure 3 A schematic diagram showing an open state of a fixing unit of Embodiment 2 of the present utility model;

[0038] Figure 4 Schematic diagrams showing the structure of a fixing unit of Example 3 of the present utility model, wherein (a) is a three-dimensional diagram of the fixing unit, (b) is a diagram showing a clamped state of the fixing unit, and (c) is a diagram showing an open state of the fixing unit;

[0039] Figure 5 Schematic diagrams showing the structure of a fixing unit of Example 4 of the utility model, wherein (a) is a three-dimensional diagram of the fixing unit, (b) is a diagram showing a clamped state of the fixing unit, and (c) is a diagram showing an open state of the fixing unit;

[0040] Figure 6 Schematic diagrams showing the structure of a fixing unit of Example 5 of the utility model, wherein (a) is a three-dimensional diagram of the fixing unit, (b) is a diagram of the fixing unit in a clamped state, and (c) is a diagram of the fixing unit in an open state;

[0041] Figure 7 Schematic diagrams showing the structure of a fixing unit of Example 6 of the present utility model, wherein (a) is a three-dimensional diagram of the fixing unit, (b) is a diagram showing a clamped state of the fixing unit, and (c) is a diagram showing an open state of the fixing unit;

[0042] Figure 8 The schematic diagrams show the structure of the fixing unit of Example 7 of the utility model, wherein (a) is a three-dimensional schematic diagram of the fixing unit, (b) is a schematic diagram of the clamping state of the fixing unit, and (c) is a schematic diagram of the opening state of the fixing unit.

[0043] The following are the descriptions of the figures:

[0044] 1-power element; 11-connecting rod;

[0045] 2-clamping module; 21-pressing block; 22-supporting block; 221-base; 222-positioning pin; 23-internal connecting block; 24-hinge assembly; 26-rotating shaft fixing member; 261-illustration of the open state of the pressing block of Example 7;

[0046] 3-housing mounting piece; 31-unit protection cover;

[0047] 201-first sleeve; 202-first limit block; 203-first compression spring; 204-positioning hook unit; 206-illustration of the opening state of the pressure block of Example 2;

[0048] 301 - second sleeve; 302 - second limit block; 303 - schematic diagram of the fixing unit in the embodiment 3 in the open state;

[0049] 211-connecting member; 223-block member; 401-third limiting block; 402-second compression spring; 403-illustration of the open state of the compression block of Example 4;

[0050] 501-fourth limit block; 502-third compression spring; 503-illustration of the open state of the compression block of Example 5;

[0051] 231 - first connecting segment; 232 - second connecting segment; 25 - self-locking unit; 251 - self-locking adjustment block; 252 - fourth compression spring; 253 - self-locking block; 212 - schematic diagram of the open state of the pressure block of Example 6. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0055] Terminology explanation:

[0056] Body in White: According to the body terminology standard and the definition in textbooks, body in white refers to the body that has been welded but not yet painted. The painted body in white plus the interior and exterior decoration (including the dashboard, seats, windshield, carpet, interior trim, etc.) and the electronic and electrical system (audio, wiring harness, switches, etc.), plus the chassis system (including brakes, suspension systems, etc.), plus the powertrain system (including engine, gearbox, etc.) constitute the whole vehicle.

[0057] Welding: Welding is the process of assembling stamping parts into a body in white through various connection processes. Welding is the most important process in the production process of body in white in the welding workshop. The main welding processes include spot welding, projection welding, CO2 gas shielded welding, stud welding, etc.

[0058] Welding fixture: Welding fixture is an industrial equipment used for car body welding that can quickly and accurately position parts in a fixed position and keep them fixed without deviation.

[0059] Welding gripper: Welding gripper is an industrial equipment that uses a cylinder to drive the clamping block to firmly grasp the body-in-white workpiece for body-in-white welding.

[0060] The power element may be any one of a telescopic cylinder, a linear motor or an electric push rod. In this specific implementation, a telescopic cylinder is used as the power element for illustration;

[0061] The hinge assembly may be any one of a sliding hinge, a rotary connector or a swivel hinge. In this specific embodiment, the hinge assembly is a swivel hinge.

[0062] Example 1

[0063] Please refer to Figure 1-Figure 8 , this embodiment provides a modular integrated clamping and fixing unit, including a power element 1, a clamping module 3 and a housing mounting member 2;

[0064] The power element 1 is provided with a connecting rod 11;

[0065] The housing mounting member 2 is arranged outside the clamping module 3;

[0066] The clamping module 3 is arranged on the power element 1; the clamping module 3 includes a pressure block 21, a support block 22, an internal connection block 23 and a hinge assembly 24, the support block 22 is arranged on the top of the shell mounting member 2, the internal connection block 23 is transmission-connected with the connecting rod 11, and the pressure block 21 is connected to the internal connection block 23 through the hinge assembly 24, and is used to drive the pressure block 21 when the power element 1 is running, so that the pressure block 21 clamps the workpiece on the support block 22.

[0067] In this embodiment, the modular integrated clamping and fixing unit includes a power element 1, a clamping module 3 and a housing mounting 2, that is, a cylinder or a motor can be integrated as the power element 1 to simplify the overall structure of the fixing unit, and the position state of the pressure block 21 can be changed by the hinge assembly 24 to narrow the opening state range, thereby forming a modular positioning fixture product; while the unit is simple, clean and beautiful, it has the advantage of saving unit design space.

[0068] Preferably, the pressing block 21 also includes a connecting member 211, one end of which is provided with a waist-shaped hole, and the hinge assembly 24 is slidably set in the waist-shaped hole, and the other end of the connecting member 211 is used to set the pressing block 21, and is used to transmit the connecting member 211 to make the pressing block 21 rotate downward or rotate upward when the hinge assembly 24 moves in the waist-shaped hole.

[0069] Example 2

[0070] Please refer to Figure 1-Figure 3 On the basis of Example 1, the clamping module 3 further includes a first sleeve 201, a first limit block 202 and a first compression spring 203, the first sleeve 201 is arranged in the housing mounting member 2, the first limit block 202 is slidably arranged along the first sleeve 201, the first limit block 202 is rotatably connected to the internal connecting block 23, and is used to limit the movement stroke of the internal connecting block 23; the first compression spring 203 is arranged between the first limit block 202 and the pressing block 21, and is used to push the pressing block 21 to open outward;

[0071] The pressing block 21 is a three-claw positioning block, which includes three positioning hook units 204. The three positioning hook units 204 are arranged in a circular array with the connecting rod 11 as the center. The three-claw positioning block is switched to an extended state or a retracted state when the power element 1 is running;

[0072] The support block 22 is arranged in a ring shape, and the three-claw positioning block passes through the support block 22; when the three-claw positioning block is used to clamp a workpiece, the three-claw positioning block is in an unfolded state, and the three positioning hook claw units 204 are pressed down on the workpiece to position and clamp the workpiece on the top of the support block 22.

[0073] In the application scenario of this embodiment, the pressing block 21 is a three-claw positioning block, which connects the three-claw positioning block with the connecting rod 11 of the power element 1 (telescopic cylinder). Through the telescopic movement of the telescopic cylinder, the internal connecting block 23 pushes the three-claw positioning block and the first limit block 202 to move linearly along the first sleeve 201 in the direction of the connecting rod 11. At the same time, three evenly distributed first compression springs 203 are arranged between the internal connecting block 23 and the first limit block 202, and the first compression springs 203 are always in a compressed state, so as to ensure that the relative positions of the internal connecting block 23, the three-claw positioning block and the first limit block 202 remain unchanged when they have not reached the terminal position (i.e., the contact surface between the support block 22 and the workpiece). When the first limit block 202 reaches the terminal position (i.e., the contact surface between the support block 22 and the workpiece), the telescopic cylinder continues to apply axial force to the connecting rod 11. At this time, the three-claw positioning block and the first limit block 202 cannot continue to move linearly along the extending direction of the connecting rod 11, and the three-claw positioning block will rotate around the hinge assembly 24 to open. Since the three-claw positioning block is composed of three positioning claw units 204 evenly distributed relative to the connecting rod 11, the positioning claw units 204 will reach the final position at the same time after opening at the same time (i.e., the three positioning claw units 204 are raised and intersected), and the modular integrated clamping and fixing unit is in an open state, such as Figure 3 part).

[0074] The clamping process of the unit is opposite to the opening process. When the connecting rod 11 retracts, due to the external thrust of the first compression spring 203, the three-claw positioning block first rotates around the hinge assembly 24, and then the connecting rod 11 drives the retraction movement of the internal connecting block 23 to achieve the clamping of the workpiece (that is, the three positioning hook units 204 descend and open, and the three positioning hook units 204 are pressed down on the workpiece). At the same time, due to the circular arc design of the three-claw positioning block on the corresponding workpiece positioning hole, the positioning function of the workpiece is realized.

[0075] In this embodiment, the circular arc design of the three-jaw positioning block on the corresponding workpiece positioning hole realizes the positioning function of the workpiece, that is, the positioning and clamping functions of the workpiece with a large circular hole are realized through a three-jaw clamping and positioning unit.

[0076] Example 3

[0077] Please refer to Figure 4 On the basis of Example 1, the support block 22 includes a base 221 and a positioning pin 222, and a hole is provided on the side of the positioning pin 222, and the hole penetrates from the side of the positioning pin 222 to the bottom of the base 221;

[0078] The clamping module 3 further includes a second sleeve 301 and a second limit block 302, wherein the second sleeve 301 is disposed in the housing mounting member 2, the second limit block 302 is slidably disposed along the second sleeve 301, and the hinge assembly 24 is rotatably connected to the second limit block 302 to limit the movement stroke of the internal connection block 23;

[0079] The pressing block 21 is arranged in the opening; when the pressing block 21 is used to clamp the workpiece, the pressing block 21 extends out from the opening under the push of the connecting rod 11, and the pressing block 21 rotates around the hinge assembly 24 and presses down on the workpiece, so as to position and clamp the workpiece on the top of the base 221.

[0080] In the application scenario of the present embodiment, the connecting rod 11 in the telescopic cylinder extends out under the action of the air source, driving the internal connecting block 23, the pressure block 21 and the second limit block 302 to move linearly in the extending direction of the connecting rod 11 under the auxiliary action of the second sleeve 301. When the second limit block 302 reaches the terminal position (i.e., the top of the base 221, the contact surface with the workpiece), the telescopic cylinder continues to apply axial force to the connecting rod 11. At this time, the pressure block 21 and the second limit block 302 cannot continue to move linearly in the extending direction of the connecting rod 11. The pressure block 21 will rotate and shrink around the hinge assembly 24, and the unit is in an open state (i.e., the pressure block 21 rises and retracts into the opening, as shown in FIG. 2 ). Figure 4 (as shown in part (c)).

[0081] The clamping process of the unit is opposite to the opening process. The pressing block 21 rotates around the hinge assembly 24 and the connecting rod 11 drives the internal connecting block 23 to retract. The pressing block 21 is pushed out of the opening by the connecting rod 11, and the pressing block 21 rotates around the hinge assembly 24 and presses down on the workpiece, finally achieving the positioning and clamping of the workpiece.

[0082] In this embodiment, the positioning and clamping function of a hole in the workpiece can be achieved through simple internal connection and limiting functions, thereby simplifying the design unit.

[0083] Example 4

[0084] Please refer to Figure 5On the basis of Example 1, the clamping module 3 further includes a third limit block 401 and a second compression spring 402, the third limit block 401 is slidably disposed in the housing mounting member 2, and the connecting member 211 is rotatably connected to the third limit block 401; the second compression spring 402 is disposed between the third limit block 401 and the internal connecting block 23;

[0085] The support block 22 is arranged on the top of the shell mounting member 2 through the block member 223, and the connecting member 211 extends out from the block member 223; when the pressure block 21 is used to clamp the workpiece, the third limit block 401 moves along the pushing direction of the connecting rod 11 to abut against the block member 223, and the connecting member 211 is pushed by the connecting rod 11, and the connecting member 211 rotates and presses down around the hinge assembly 24, and the pressure block 21 is pressed down on the workpiece to position and clamp the workpiece on the top of the support block 22. At the same time, a unit protection cover 31 is provided to facilitate the assembly and maintenance of the internal accessories of the fixing unit.

[0086] In the application scenario of this embodiment, the connecting rod 11 in the telescopic cylinder extends under the action of the air source, driving the internal connecting block 23, the pressure block 21, the connecting member 211 and the third limit block 401 to move linearly along the extending direction of the connecting rod 11. At the same time, two second compression springs 402 are arranged between the internal connecting block 23 and the third limit block 401, and the second compression springs 402 are always in a compressed state, so as to ensure that the internal connecting block 23, the pressure block 21, the connecting member 211 and the third limit block 401 do not reach the terminal position (i.e., the contact surface where the stop block member 223 contacts the workpiece), and the relative positions remain unchanged. When the third limit block 401 reaches the terminal position (i.e., the contact surface between the stop block member 223 and the workpiece), the telescopic cylinder continues to apply axial force to the connecting rod 11. At this time, the pressing block 21, the connecting member 211 and the third limit block 401 cannot continue to move linearly along the extending direction of the connecting rod 11. The pressing block 21 and the connecting member 211 will rotate around the hinge assembly 24, and the unit is in an open state (i.e., the connecting member 211 rotates and tilts, and the pressing block 21 and the support block 22 are staggered with each other, such as Figure 5 (as shown in part (c)).

[0087] The clamping process of the unit is opposite to the opening process. The pressing block 21 and the connecting member 211 rotate around the hinge assembly 24 and the connecting rod 11 drives the internal connecting block 23 to retract. The pressing block 21 is pressed down on the workpiece to position and clamp the workpiece on the top of the support block 22, thereby finally clamping the workpiece.

[0088] In this embodiment, the movable space of the third limit block 401 is used to control the open state of the modular integrated clamping and fixing unit within the clamping state position, so that the unit can be applied to working conditions with smaller space.

[0089] Example 5

[0090] Please refer to Figure 6 On the basis of Example 1, the clamping module 3 further includes a fourth limit block 501 and a third compression spring 502; the fourth limit block 501 is fixedly disposed in the housing mounting member 2, and the connecting member 211 is rotatably connected to the fourth limit block 501; the third compression spring 502 is disposed between the fourth limit block 501 and the internal connecting block 23;

[0091] When the pressing block 21 is used to clamp the workpiece, the connecting member 211 is rotated and pressed down around the hinge assembly 24 under the push of the connecting rod 11. The pressing block 21 is pressed down to position and clamp the workpiece on the top of the support block 22, which is used to shorten the moving stroke of the connecting rod 11. At the same time, a unit protection cover 31 is provided to facilitate the assembly and maintenance of the internal accessories of the fixed unit.

[0092] In the application scenario of this embodiment, the connecting rod 11 in the telescopic cylinder extends under the action of the air source, driving the internal connecting block 23 to move linearly along the extending direction of the connecting rod 11. The pressing block 21 and the connecting member 211 will rotate and open around the hinge assembly 24, and the unit will be in an open state (that is, the connecting member 211 rotates and tilts, and the pressing block 21 and the supporting block 22 are staggered, such as Figure 6 (as shown in part (c)).

[0093] The clamping process of the unit is opposite to the opening process, and the workpiece is finally clamped by rotating the pressing block 21 and the connecting member 211 around the hinge assembly 24. When the clamping unit is actually used in a gripper, if there is a gas failure during the gripping process, the third compression spring 502 can overcome the gravity of the internal connecting block 23 and keep the unit in a clamped state to ensure safety.

[0094] In this embodiment, the position of the fourth limit block 501 is fixed, so that the modular integrated clamping and fixing unit can use the power element 1 with an extremely short stroke to achieve the clamping and opening of the unit, thereby saving the purchase cost of the unit.

[0095] Example 6

[0096] Please refer to Figure 7 On the basis of Example 1, the internal connection block 23 includes a first connection segment 231 and a second connection segment 232, the first connection segment 231 is transmission-connected to the connection rod 11, and the second connection segment 232 is connected to the hinge assembly 24;

[0097] The clamping module 3 further includes a self-locking unit 25, which is arranged on one side of the housing mounting member 2; the self-locking unit 25 is composed of a self-locking adjustment block 251, a fourth compression spring 252 and a self-locking block 253, the self-locking adjustment block 251, the self-locking block 253 faces the internal connecting block 23, the fourth compression spring 252 is arranged between the self-locking block 253 and the self-locking adjustment block 251, and the self-locking adjustment block 251 is used to adjust the compression state of the fourth compression spring 252;

[0098] When the pressing block 21 is used to clamp the workpiece, the connecting member 211 is rotated and pressed down around the hinge assembly 24 under the push of the second connecting segment 232, and the pressing block 21 is pressed down to position and clamp the workpiece on the top of the support block 22. The fourth compression spring 252 pushes the self-locking block 253 to engage and limit the second connecting segment 232, so that the self-locking unit 25 locks the pressing block 21 in a clamped state. At the same time, a unit protection cover 31 is provided to prevent welding spatter for equipment such as the hinge assembly 24 in the fixed unit.

[0099] In the application scenario of this embodiment, the connecting rod 11 in the telescopic cylinder is extended under the action of the air source, driving the first connecting segment 231 and the second connecting segment 232 to move linearly along the extending direction of the connecting rod 11. The pressing block 21 and the connecting member 211 will rotate around the hinge assembly 24 to open, and the unit is in an open state (that is, the connecting member 211 rotates outward, and the pressing block 21 and the supporting block 22 are staggered, such as Figure 7 (as shown in part (c)).

[0100] The clamping process of the unit is opposite to the opening process. The clamping block 21 and the connecting member 211 rotate around the hinge assembly 24 to finally achieve the clamping of the workpiece (that is, the connecting member 211 rotates inward, and the clamping block 21 and the supporting block 22 correspond to each other). Under the action of the fourth compression spring 252, the self-locking block 253 of this embodiment always has a force along the fourth compression spring 252 toward the inside of the unit. The self-locking block 253 engages and limits the second connecting segment 232, which plays a role in locking the unit into a clamped state;

[0101] Under the action of the gas source, the connecting rod 11 drives the first connecting segment 231 to move, and the unit can reach the open state only when the self-locking block 253 that is stuck in the second connecting segment 232 is pushed away.

[0102] In this embodiment, under the action of the fourth compression spring 252, the self-locking block 253 always has a force along the fourth compression spring 252 toward the inside of the unit. When the pressure block 21 is used to clamp the workpiece, the self-locking unit 25 locks the pressure block 21 in a clamped state; when the power element 1 runs and drives the internal connecting block 23 to move, pushing away the self-locking block 253 that is stuck on the second connecting segment 232, the unit can reach an open state to release the clamping of the workpiece. This solution can achieve the effect of locking the unit in a clamped state.

[0103] Example 7

[0104] Please refer to Figure 8 On the basis of Example 1, the clamping module 3 further includes a shaft fixing member 26, the shaft fixing member 26 is arranged on the housing mounting member 2, a top screw structure is arranged on the outer side of the support block 22, and the support block 22 is coaxially arranged with the shaft fixing member 26 through the top screw structure; the pressing block 21 extends from the center of the support block 22 and the shaft fixing member 26;

[0105] When the pressing block 21 is used to clamp a workpiece, the pressing block 21 is driven by the connecting rod 11 to rotate and press downward around the hinge assembly 24 , and the pressing block 21 is pressed downward to position and clamp the workpiece on the top of the supporting block 22 .

[0106] In this embodiment, the support block 22 is fixed to the rotating shaft fixing member 26 by means of a jackscrew, so as to facilitate quick replacement and maintenance of the support block 22 when it is worn.

[0107] Example 8

[0108] This embodiment provides a welding fixture gripper device, including a modular integrated clamping and fixing unit as described in any one of the above-mentioned embodiments.

[0109] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A modular integrated clamping and fixing unit, characterized in that: It comprises a power element (1), a clamping module (2) and a housing mounting part (3); The power element (1) is provided with a connecting rod (11); The housing mounting member (3) is arranged on the outside of the clamping module (2); The clamping module (2) is arranged on the power element (1); the clamping module (2) comprises a pressure block (21), a support block (22), an internal connection block (23) and a hinge assembly (24); the support block (22) is arranged on the top of the housing mounting member (3); the internal connection block (23) is transmission-connected to the connecting rod (11); the pressure block (21) is connected to the internal connection block (23) via the hinge assembly (24) and is used to drive the pressure block (21) when the power element (1) is running, so that the pressure block (21) clamps the workpiece on the support block (22).

2. The modular integrated clamping and fixing unit according to claim 1, characterized in that: The clamping module (2) further comprises a first sleeve (201), a first limit block (202) and a first compression spring (203); the first limit block (202) is rotatably connected to the internal connection block (23); the first compression spring (203) is arranged between the first limit block (202) and the pressure block (21) and is used to push the pressure block (21) to open outward.

3. The modular integrated clamping and fixing unit according to claim 2, characterized in that: The pressing block (21) is a three-claw positioning block, and the three-claw positioning block includes three positioning hook claw units (204). The three positioning hook claw units are arranged in a circular array with the connecting rod (11) as the center. The supporting block (22) is arranged in a ring shape, and the three-claw positioning block passes through the supporting block (22); the three-claw positioning block switches to an extended state or a retracted state when the power element (1) is in operation.

4. The modular integrated clamping and fixing unit according to claim 1, characterized in that: The pressing block (21) further comprises a connecting member (211), one end of which is provided with a waist-shaped hole, and the hinge assembly (24) is slidably arranged in the waist-shaped hole, and the other end of the connecting member (211) is used to set the pressing block (21), and is used to drive the connecting member (211) to rotate the pressing block (21) downward or upward when the hinge assembly (24) moves in the waist-shaped hole.

5. The modular integrated clamping and fixing unit according to claim 4, characterized in that: The support block (22) comprises a base (221) and a positioning pin (222), and a side surface of the positioning pin (222) is provided with an opening, and the opening passes through the side surface of the positioning pin (222) to the bottom of the base (221); The clamping module (2) further comprises a second shaft sleeve (301) and a second limit block (302), wherein the second shaft sleeve (301) is arranged in the housing mounting member (3), the second limit block (302) is slidably arranged along the second shaft sleeve (301), and the hinge assembly (24) is rotatably connected to the second limit block (302); The pressing block (21) is arranged in the opening; when the pressing block (21) is used to clamp a workpiece, the pressing block (21) rotates around the hinge assembly (24) and presses down on the workpiece, so as to position and clamp the workpiece on the top of the base (221).

6. The modular integrated clamping and fixing unit according to claim 4, characterized in that: The clamping module (2) further comprises a third limit block (401) and a second compression spring (402); the third limit block (401) is slidably arranged in the housing mounting member (3); the connecting member (211) is rotatably connected to the third limit block (401); the second compression spring (402) is arranged between the third limit block (401) and the internal connecting block (23); The support block (22) is arranged on the top of the housing mounting member (3) through a stop block member (223), and the connecting member (211) extends out from the stop block member (223); when the pressing block (21) is used to clamp the workpiece, the third limit block (401) moves along the pushing direction of the connecting rod (11) to abut against the stop block member (223), and the connecting member (211) is pushed by the connecting rod (11) to rotate and press down around the hinge assembly (24), and the pressing block (21) positions and clamps the workpiece on the top of the support block (22).

7. The modular integrated clamping and fixing unit according to claim 4, characterized in that: The clamping module (2) further comprises a fourth limit block (501) and a third compression spring (502); the fourth limit block (501) is fixedly arranged in the housing mounting member (3), and the connecting member (211) is rotatably connected to the fourth limit block (501); the third compression spring (502) is arranged between the fourth limit block (501) and the internal connecting block (23); When the pressing block (21) is used to clamp a workpiece, the connecting member (211) is rotated and pressed downward around the hinge assembly (24) under the push of the connecting rod (11), and the pressing block (21) is pressed downward to position and clamp the workpiece on the top of the supporting block (22).

8. The modular integrated clamping and fixing unit according to claim 4, characterized in that: The internal connection block (23) comprises a first connection segment (231) and a second connection segment (232), wherein the first connection segment (231) is transmission-connected to the connection rod (11), and the second connection segment (232) is connected to the hinge assembly (24); The clamping module (2) further comprises a self-locking unit (25), wherein the self-locking unit (25) is arranged on one side of the housing mounting member (3); the self-locking unit (25) is composed of a self-locking adjustment block (251), a fourth compression spring (252) and a self-locking block (253), wherein the self-locking adjustment block (251) and the self-locking block (253) face the internal connecting block (23), the fourth compression spring (252) is arranged between the self-locking block (253) and the self-locking adjustment block (251), and the self-locking adjustment block (251) is used to adjust the compression state of the fourth compression spring (252); When the pressing block (21) is used to clamp a workpiece, the connecting member (211) is rotated and pressed down around the hinge assembly (24) under the push of the second connecting segment (232), and the pressing block (21) is pressed down to position and clamp the workpiece on the top of the supporting block (22), and the fourth compression spring (252) pushes the self-locking block (253) to engage and limit the second connecting segment (232), so that the self-locking unit (25) locks the pressing block (21) in a clamped state.

9. The modular integrated clamping and fixing unit according to claim 1, characterized in that: The clamping module (2) further comprises a rotating shaft fixing member (26), wherein the rotating shaft fixing member (26) is arranged on the housing mounting member (3), and the supporting block (22) is coaxially arranged with the rotating shaft fixing member (26); the pressing block (21) extends from the center of the supporting block (22) and the rotating shaft fixing member (26); When the pressing block (21) is used to clamp a workpiece, the pressing block (21) is driven by the connecting rod (11) to rotate and press downward around the hinge assembly (24), and the pressing block (21) is pressed downward to position and clamp the workpiece on the top of the supporting block (22).

10. A welding fixture gripper device, characterized in that: It comprises a modular integrated clamping and fixing unit as described in any one of claims 1 to 9.

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