Positioning clamp for metal sheet machining

Abstract

The invention discloses a positioning clamp for metal sheet machining. The positioning clamp comprises a clamping structure used for positioning a metal sheet. The clamping structure comprises a connecting plate, the connecting plate is provided with a transverse plate, a limiting plate is arranged at the end of the transverse plate, the connecting plate is symmetrically provided with two electric push rods, the extending ends of the electric push rods are provided with connecting blocks, a movable plate is arranged on the connecting blocks in a penetrating mode, an outer plate is arranged at the outer end of the movable plate, and an inner plate is arranged at the inner end of the movable plate. The two inner plates and the limiting plate are matched to form a C-shaped piece used for limiting a metal sheet, a fixing plate is arranged on the connecting block, springs are arranged between the fixing plate and the inner plates, an extending plate is arranged at the end of the outer plate, and a suction cup is arranged on the extending plate and used for adsorbing and positioning the metal sheet. The spraying device has the advantages that the spraying side of the metal sheet is not shielded, and the metal sheet can be completely sprayed.

Description

Technical Field

[0001] The present invention relates to the technical field of metal processing, and specifically relates to a positioning fixture for metal sheet processing. Background Art

[0002] Metal sheets are basic materials widely used in industrial manufacturing, construction, electronics, automobiles and other fields, and generally refer to metal plates with a thickness between 0.2 mm and 6 mm.

[0003] The main processes of metal sheet processing include blanking and cutting, forming and welding, connection and surface treatment. For the surface treatment of metal sheets, the formed sheet surface can be sprayed with corresponding wear-resistant powder. The metal powder or wire melts at high temperature and is sprayed onto the surface of the metal sheet through a high-speed air flow, and quickly cools and solidifies to form a coating after impact.

[0004] When performing surface treatment on a metal sheet, the metal sheet is clamped by a corresponding fixture, and then the molten metal powder or wire is sprayed onto the surface of the metal sheet by spraying. When the existing fixture clamps the formed metal sheet, the clamping part of the fixture is usually C-shaped to clamp the metal sheet. However, during the spraying process, the clamping part of the fixture will block a part when clamping the metal sheet, resulting in that a small part of the formed metal sheet cannot be sprayed at the position blocked by the clamping, and subsequent reprocessing is required.

[0005] In view of this, we propose a positioning fixture for metal sheet processing. Summary of the Invention

[0006] The purpose of the present invention is to provide a positioning fixture for metal sheet processing to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A positioning fixture for metal sheet processing, including a clamping structure for positioning the metal sheet;

[0008] The clamping structure includes a connecting plate, a transverse plate is fixedly arranged on one side of the connecting plate, a limiting plate is fixedly arranged at the end of the transverse plate, two electric push rods are symmetrically arranged on one side of the connecting plate, the base of the electric push rod is fixedly connected to one side of the connecting plate by screws, a connecting block is fixedly arranged at the extending end of the electric push rod, a movable plate is inserted into the groove on the connecting block, an outer plate is fixedly arranged at the outer end of the movable plate, an inner plate is fixedly arranged at the inner end of the movable plate, the two inner plates and the limiting plate cooperate to form a C-shaped part for limiting the metal sheet, a fixing plate is fixedly arranged on the connecting block, a spring is arranged between the fixing plate and the inner plate, an extension plate is arranged at the end of the outer plate, and a suction cup is arranged on the extension plate, and the suction cup is used for adsorbing and positioning the metal sheet.

[0009] Preferably, one end of the inner plate is formed into an arc surface, and the arc surface corresponds to the end of the limiting plate.

[0010] Preferably, the spring is always in a compressed state.

[0011] Preferably, the outer plate and the extension plate are connected by a piston member. The piston member includes an oil cylinder fixed on the fixed plate. There are two piston cylinders on the oil cylinder. Piston rods are movably arranged in both of the two piston cylinders. The outer ends of the two piston rods are respectively connected to the outer plate and the extension plate. The oil cylinder is filled with hydraulic oil, and the hydraulic oil fills the oil cylinder and the piston cylinders. There is a height difference between the two piston rods. The piston member is used for the alternating lifting and lowering cooperation of the outer plate and the extension plate.

[0012] Preferably, a through groove is formed at the end of the outer plate, and a slider is fixed at the end of the extension plate. The slider is in a T shape, and the slider is slidably matched with the through groove.

[0013] Preferably, it further includes a stepping motor A, and a transmission shaft of the stepping motor A is connected to a connecting shaft fixed on the connecting plate through a coupling.

[0014] Preferably, it further includes a lead screw and a stepping motor B. The lead screw is connected to the stepping motor B through a transmission structure. A driving wheel and a driven wheel are arranged in a housing of the transmission structure. The driving wheel and the driven wheel are connected by a transmission belt. The driving wheel is connected to the stepping motor B, and the driven wheel is connected to a lead screw shaft of the lead screw. A nut on the lead screw is connected to a base of the stepping motor A.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. By setting the stepping motor A and the clamping structure, the side of the metal thin plate to be sprayed is not blocked, and it has the advantage of being able to completely spray the sprayed side of the metal thin plate, solving the problem that the clamping part of the fixture will block a part when clamping the metal thin plate, resulting in a small part of the formed metal thin plate not being sprayed at the position blocked by the clamping.

[0017] 2. By setting the oil cylinder, piston cylinders and piston rods, it has the advantage of correspondingly adjusting the positions of the extension plate and the suction cup according to the position of the outer plate, so that the suction cup will not be hindered by the end of the limiting plate when advancing, solving the problem that the suction cup is hindered and restricted by the end of the limiting plate during the advancing process.

[0018] 3. By setting the through groove and the slider, when the extension plate adjusts its position relative to the outer plate, the T-shaped slider moves along the through groove, so that the extension plate can stably adjust its position relative to the outer plate.

[0019] 4. By providing a lead screw and a stepper motor B, the present invention has the advantages of adjusting the height of the clamping structure, providing sufficient space for the rotation of the metal sheet, and not affecting the rotation adjustment of the metal sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the metal sheet placed horizontally according to the present invention;

[0021] Figure 2 Schematic diagram of the structure of the metal sheet placed longitudinally according to the present invention;

[0022] Figure 3 Schematic diagram of the clamping structure according to the present invention;

[0023] Figure 4 Schematic diagram of the connection structure between the outer plate and the inner plate according to the present invention;

[0024] Figure 5 Front view of the clamping of one side of the metal sheet according to the present invention;

[0025] Figure 6 Schematic diagram of the connection structure between the outer plate and the extension plate according to the present invention;

[0026] Figure 7 Schematic diagram of the connection structure of the slider according to the present invention;

[0027] Figure 8 Front view of the double-sided clamping of the metal sheet according to the present invention;

[0028] Figure 9 Front view of the clamping of the other side of the metal sheet according to the present invention;

[0029] Figure 10 Front view of the retraction of the clamping part of the clamping structure according to the present invention.

[0030] In the figure: 100, clamping structure; 200, stepper motor A; 300, lead screw; 400, transmission structure; 500, stepper motor B;

[0031] 101, connecting plate; 102, cross plate; 103, limiting plate; 104, electric push rod; 105, connecting block; 106, movable plate; 107, outer plate; 108, inner plate; 109, fixing plate; 110, spring; 111, extension plate; 112, suction cup; 113, connecting shaft; 114, oil cylinder; 115, piston cylinder; 116, piston rod;

[0032] 1071, through groove;

[0033] 1081, arc surface;

[0034] 1111, slider. DETAILED DESCRIPTION OF THE INVENTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Please refer to Figures 1 to 6 、 Figures 8 to 10, an embodiment provided by the present invention: a positioning fixture for metal sheet processing, including a clamping structure 100 for positioning the metal sheet; the clamping structure 100 includes a connecting plate 101, a transverse plate 102 is fixedly arranged on one side of the connecting plate 101, a limiting plate 103 is fixedly arranged at the end of the transverse plate 102, the limiting plate 103 and the transverse plate 102 form a T-shaped structure, two electric push rods 104 are symmetrically arranged on one side of the connecting plate 101, the base of the electric push rod 104 is fixedly connected with one side of the connecting plate 101 by screws, a connecting block 105 is fixedly arranged at the extending end of the electric push rod 104, a movable plate 106 is arranged in the groove on the connecting block 105, the length of the movable plate 106 is greater than the length of the connecting block 105, an outer plate 107 is fixedly arranged at the outer end of the movable plate 106, an inner plate 108 is fixedly arranged at the inner end of the movable plate 106, one end of the inner plate 108 is set as an arc surface 1081, the arc surface 1081 corresponds to the end of the limiting plate 103, one end of the inner plate 108 passes through the end of the limiting plate 103 under the push of the electric push rod 104, the arc surface 1081 contacts the end of the limiting plate 103, as the inner plate 108 moves forward, the end of the limiting plate 103 squeezes open the inner plate 108 along the arc surface 1081, and pushes the movable plate 106 to drive the outer plate 107 to move; the two inner plates 108 and the limiting plate 103 cooperate to form a C-shaped part for limiting the metal sheet, when placing the metal sheet, the C-shaped part is used to clamp the metal sheet; a fixing plate 109 is fixedly arranged on the connecting block 105, a spring 110 is arranged between the fixing plate 109 and the inner plate 108, the spring 110 is always in a compressed state, the spring 110 always provides a force to push the inner plate 108, the two ends of the spring 110 are respectively fixedly connected with the fixing plate 109 and the inner plate 108, and the elastic coefficient of the spring 110 is selected and used by technicians in this field according to the actual situation; an extension plate 111 is arranged at the end of the outer plate 107, a suction cup 112 is arranged on the extension plate 111, the joint on the suction cup 112 is connected with an external vacuum pump through a hose, and the suction cup 112 is used for adsorbing and positioning the metal sheet. It further includes a stepping motor A200, which is selected and used by technicians in this field according to the actual situation, the transmission shaft of the stepping motor A200 is connected with a connecting shaft 113 fixedly arranged on the connecting plate 101 through a coupling, and the stepping motor A200 drives the connecting shaft 113 to rotate, so as to drive the connecting plate 101 to rotate.When placing the metal sheet to be sprayed, the connecting plate 101 and the two electric push rods 104 correspond in the longitudinal direction. At this time, the electric push rods 104 are in the pushed-out state, the inner plate 108 contacts the limit plate 103, and the two groups of suction cups 112 correspond up and down. The metal sheet is pushed in between the two groups of suction cups 112, and the end of the metal sheet is located in the C-shaped part. In this state, the lower suction cup 112 sucks the metal sheet under the action of the external vacuum pump, and the rubber on the suction side of the suction cup 112 presses against the metal sheet, the upper electric push rod 104 retreats, and the upper suction cup 112 no longer blocks one side of the metal sheet, and the stepper motor A200 rotates 90° clockwise, and the metal sheet rotates and adjusts to the longitudinal direction. The side of the metal sheet that is not adsorbed corresponds to the nozzle of the sprayer, and the side of the metal sheet that is not adsorbed is completely sprayed. After one side of the metal sheet is completely sprayed, the stepper motor A200 rotates 90 degrees counterclockwise, the metal sheet is horizontal, the upper electric push rod 104 is pushed out, and the upper suction cup 112 corresponds to the metal sheet. The upper suction cup 112 sucks the metal sheet under the action of an external vacuum pump, and the rubber on the suction side of the suction cup 112 presses against the metal sheet. The lower suction cup 112 removes the suction force, the lower electric push rod 104 retreats, and the lower suction cup 112 no longer blocks the other side of the metal sheet. The stepper motor A200 continues to rotate 90 degrees counterclockwise to rotate the other side of the metal sheet to the longitudinal direction. The other side of the metal sheet corresponds to the nozzle of the sprayer, and the side of the metal sheet that is not adsorbed is completely sprayed. After the other side of the metal sheet is completely sprayed, the stepper motor A200 rotates 90 degrees clockwise, the metal sheet is horizontal, the electric push rod 104 below is pushed out, the C-shaped piece formed by the two inner plates 108 and the limit plate 103 clamps the metal sheet again, the two sets of suction cups 112 remove the suction, and the sprayed metal sheet is removed. The rotation direction of the connecting plate 101 will not cause the wires connected to the electric push rod 104 to get tangled.

[0037] The present invention has the advantage of not blocking one side of the metal sheet for spraying by setting a stepper motor A200 and a clamping structure 100, so that the metal sheet can be sprayed completely. This solves the problem that the clamping part of the clamp will block part of the metal sheet when clamping it, resulting in a small part of the formed metal sheet being blocked by the clamp and not being sprayed during surface spraying.

[0038] See also Figure 3 , Figure 4 , Figure 6 and Figure 7, An embodiment provided by the present invention: A positioning fixture for metal sheet processing. The outer plate 107 and the extension plate 111 are connected by a piston member. The piston member includes an oil cylinder 114. The oil cylinder 114 is fixedly arranged on the fixed plate 109. There are two piston cylinders 115 on the oil cylinder 114. The piston rods 116 are movably arranged in both of the two piston cylinders 115. The outer ends of the two piston rods 116 are respectively connected to the outer plate 107 and the extension plate 111. The oil cylinder 114 is filled with hydraulic oil. The hydraulic oil fills the oil cylinder 114 and the piston cylinders 115. There is a height difference between the two piston rods 116. The piston member is used for the alternating lifting and lowering cooperation of the outer plate 107 and the extension plate 111. When the outer plate 107 is in the state of being ejected, the piston rod 116 connected to the outer plate 107 is pushed out from the corresponding piston cylinder 115. The hydraulic oil in the oil cylinder 114 flows accordingly, and the piston rod 116 connected to the extension plate 111 is pushed into the corresponding piston cylinder 115, thereby moving the extension plate 111 inwards, and the suction cup 112 moves accordingly; when the outer plate 107 is in the state of moving back, the piston rod 116 connected to the outer plate 107 is pushed into the corresponding piston cylinder 115. The hydraulic oil in the oil cylinder 114 flows accordingly, and the piston rod 116 connected to the extension plate 111 is pushed out from the corresponding piston cylinder 115, thereby moving the extension plate 111 outwards, and the suction cup 112 moves accordingly.

[0039] By providing the oil cylinder 114, the piston cylinder 115 and the piston rod 116, the present invention has the advantage of correspondingly adjusting the positions of the extension plate 111 and the suction cup 112 according to the position of the outer plate 107, so that the suction cup 112 will not be hindered by the end of the limiting plate 103 during travel, and solves the problem that the suction cup 112 is hindered and restricted by the end of the limiting plate 103 during the travel process.

[0040] Please refer to Figure 3 , Figure 4 and Figure 7 , An embodiment provided by the present invention: A positioning fixture for metal sheet processing. A through groove 1071 is provided at the end of the outer plate 107. A slider 1111 is fixedly arranged at the end of the extension plate 111. The slider 1111 is T-shaped, and the slider 1111 is slidably matched with the through groove 1071.

[0041] By providing the through groove 1071 and the slider 1111, the present invention has the advantage that when the position of the extension plate 111 is adjusted relative to the outer plate 107, the T-shaped slider 1111 moves along the through groove 1071, so that the position of the extension plate 111 can be stably adjusted relative to the outer plate 107.

[0042] Please refer to Figures 1 to 3, an embodiment provided by the present invention: a positioning fixture for metal sheet processing, further comprising a lead screw 300 and a stepping motor B500. The lead screw 300 is connected to the stepping motor B500 through a transmission structure 400. The stepping motor B500 is selected and used by professionals according to the actual situation. Inside the housing of the transmission structure 400, there are a driving wheel and a driven wheel, which are connected by a transmission belt. The driving wheel is connected to the stepping motor B500, and the driven wheel is connected to the lead screw shaft of the lead screw 300. The nut on the lead screw 300 is connected to the base of the stepping motor A200. The stepping motor B500 drives the driving wheel to rotate. Under the action of the transmission belt, the driven wheel rotates accordingly, and the lead screw shaft of the lead screw 300 rotates, causing the nut on the lead screw 300 to drive the stepping motor A200 to move longitudinally to adjust the height.

[0043] By setting the lead screw 300 and the stepping motor B500, the present invention has the advantages of adjusting the height of the clamping structure 100, providing sufficient space for the rotation of the metal sheet, and not affecting the rotation adjustment of the metal sheet.

[0044] Working principle: The device is set on the machine table of the spraying mechanism. When placing the metal sheet to be sprayed, the connecting plate 101 and the two electric push rods 104 are longitudinally corresponding. At this time, the electric push rod 104 is in the extended state, the inner plate 108 contacts the limit plate 103, the outer plate 107 is in the state of being pushed out, the piston rod 116 connecting the outer plate 107 is pushed out from the corresponding piston cylinder 115, and the hydraulic oil in the oil cylinder 114 flows correspondingly, pushing the piston rod 116 connecting the extension plate 111 into the corresponding piston cylinder 115, thereby moving the extension plate 111 inwards. The two groups of suction cups 112 are vertically corresponding. The metal sheet is pushed between the two groups of suction cups 112, and the end of the metal sheet is located inside the C-shaped part. In this state, the lower suction cup 112 sucks the metal sheet under the action of an external vacuum pump. The rubber on the adsorption side of the suction cup 112 abuts against the metal sheet. The upper electric push rod 104 retracts. After the upper electric push rod 104 retracts, the corresponding inner plate 108 no longer contacts the limit plate 103. Under the action of the spring 110, the inner plate 108 is pushed, and the movable plate 106 moves accordingly, driving the outer plate 107 to move until the outer plate 107 contacts the corresponding end of the connecting block 105 and then stops. The outer plate 107 is in the pulled-back state. The piston rod 116 connecting the outer plate 107 is pushed into the corresponding piston cylinder 115, and the hydraulic oil in the oil cylinder 114 flows correspondingly, pushing the piston rod 116 connecting the extension plate 111 out of the corresponding piston cylinder 115, and the extension plate 111 moves outwards. The suction cup 112 moves accordingly. At this time, the adsorption side of the suction cup 112 is located outside the transverse line of the end of the limit plate 103, which does not affect the adsorption side of the suction cup 112 passing through the end of the limit plate 103. The stepping motor B500 drives the driving wheel to rotate. Under the action of the transmission belt, the driven wheel rotates accordingly, and the screw shaft of the screw 300 rotates, causing the nut on the screw 300 to drive the stepping motor A200 to move upwards. Then the stepping motor A200 rotates clockwise by 90°, and the metal sheet rotates and adjusts to the longitudinal direction. The unadsorbed side of the metal sheet corresponds to the nozzle of the spraying machine, and the unadsorbed side of the metal sheet is completely sprayed.After one side of the metal sheet is completely sprayed, the stepper motor A200 rotates counterclockwise by 90 degrees, and the metal sheet becomes horizontal. The electric push rod 104 above is pushed out, and the corresponding inner plate 108 contacts the limit plate 103 and is pushed out. The movable plate 106 moves accordingly, the outer plate 107 is pushed out, and the spring 110 is further compressed. At this time, the suction cup 112 has passed through the limit plate 103, and the piston rod 116 connecting the outer plate 107 is pushed out from the corresponding piston cylinder 115. The hydraulic oil in the oil cylinder 114 flows accordingly, and the piston rod 116 connecting the extension plate 111 is pushed into the corresponding piston cylinder 115, thereby moving the extension plate 111 inwards. The upper suction cup 112 sucks the metal sheet under the action of an external vacuum pump. The rubber on the adsorption side of the suction cup 112 abuts against the metal sheet, and the lower suction cup 112 withdraws the suction force. The lower electric push rod 104 retracts, and the lower suction cup 112 no longer blocks the other side of the metal sheet. The stepper motor A200 continues to rotate counterclockwise by 90 degrees, rotates and adjusts the other side of the metal sheet to the longitudinal direction, and the other side of the metal sheet corresponds to the nozzle of the spraying machine to completely spray the unadsorbed side of the metal sheet. After the other side of the metal sheet is completely sprayed, the stepper motor A200 rotates clockwise by 90 degrees, and the metal sheet becomes horizontal. The lower electric push rod 104 is pushed out, and the C-shaped part formed by the cooperation of the two inner plates 108 and the limit plate 103 clamps the metal sheet again. The nut on the lead screw 300 drives the stepper motor A200 to move downwards, and the suction force of both groups of suction cups 112 is withdrawn, and the sprayed metal sheet is taken off.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A positioning fixture for metal sheet processing, characterized in that: It includes a clamping structure (100) for positioning a metal sheet; The clamping structure (100) comprises a connecting plate (101), wherein the connecting plate (101) is provided with a transverse plate (102), a stop plate (103) is provided at the end of the transverse plate (102), the connecting plate (101) is symmetrically provided with two electric push rods (104), a connecting block (105) is provided at the protruding end of the electric push rod (104), a movable plate (106) is passed through the connecting block (105), an outer plate (107) is provided at the outer end of the movable plate (106), and the movable plate (106) is provided with a plurality of movable plates (106). ) is provided with an inner plate (108) at the inner end, the two inner plates (108) cooperate with the limiting plate (103) to form a C-shaped part for limiting the metal sheet, a fixing plate (109) is provided on the connecting block (105), a spring (110) is provided between the fixing plate (109) and the inner plate (108), an extension plate (111) is provided at the end of the outer plate (107), a suction cup (112) is provided on the extension plate (111), and the suction cup (112) is used to absorb and position the metal sheet.

2. A positioning fixture for metal sheet processing according to claim 1, characterized in that: One end of the inner plate (108) is configured as an arc-shaped surface (1081), and the arc-shaped surface (1081) corresponds to the end of the limiting plate (103).

3. A positioning fixture for metal sheet processing according to claim 1, characterized in that: The spring (110) is always in a compressed state.

4. A positioning fixture for metal sheet processing according to claim 1, characterized in that: The outer plate (107) and the extension plate (111) are connected via a piston member, and the piston member comprises an oil cylinder (114). The oil cylinder (114) is arranged on the fixed plate (109), and two piston cylinders (115) are arranged on the oil cylinder (114). Piston rods (116) are movably arranged in the two piston cylinders (115), and the outer ends of the two piston rods (116) are respectively connected to the outer plate (107) and the extension plate (111). The piston member is used for the alternating lifting and lowering coordination of the outer plate (107) and the extension plate (111).

5. A positioning fixture for metal sheet processing according to claim 4, characterized in that: A through slot (1071) is provided at the end of the outer plate (107), and a sliding block (1111) is provided at the end of the extension plate (111), and the sliding block (1111) is slidably matched with the through slot (1071).

6. The positioning fixture for metal sheet processing according to claim 1, characterized in that: It also includes a stepper motor A (200), wherein the transmission shaft of the stepper motor A (200) is connected to the connecting shaft (113) on the connecting plate (101).

7. A positioning fixture for metal sheet processing according to claim 6, characterized in that: It also includes a lead screw (300) and a stepper motor B (500), wherein the lead screw (300) is connected to the stepper motor B (500) via a transmission structure (400), and a nut on the lead screw (300) is connected to the stepper motor A (200).

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