Press-fit fixing mechanism

Abstract

The utility model discloses a press-fit fixing mechanism which comprises a machine frame, a plurality of press-fit jigs and a hand-operated connecting rod transmission mechanism are installed on the machine frame in the left-right direction, each press-fit jig comprises a fixed vertical plate fixed relative to the machine frame and a movable vertical plate parallel to the fixed vertical plate, and the hand-operated connecting rod transmission mechanism comprises a linkage rod extending in the left-right direction. And the linkage rod is connected with the movable vertical plate. The movable vertical plate is driven by the linkage rod to move towards the fixed vertical plate, so that a product is pressed and fixed between the movable vertical plate and the fixed vertical plate. And when the movable vertical plate is far away from the fixed vertical plate, the pressing jig loosens the product. The hand-operated connecting rod transmission mechanism drives the linkage rod to achieve opening and closing of the multiple pressing jigs at the same time, multiple products are pressed and fixed at the same time, operation is convenient, and the product clamping and fixing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fixed equipment field, especially a kind of compression fixing mechanism. BACKGROUND

[0002] In the production process, product fixing is usually involved to facilitate product processing and detection. The product clamping mechanism in the prior art includes a manual compression fixing mechanism and an electric clamping fixing mechanism.

[0003] For example, Chinese Patent No. CN119175581A discloses a clamping mechanism, which includes a base, a base plate, a clamping platform, and a drive assembly. The base plate is installed on the base and can move on the base. The clamping platform is detachably installed on the base plate and is used to clamp the workpiece to be processed. The drive assembly is installed on the base and is used to drive the base plate with the clamping platform to move on the base to adjust the position of the workpiece to be processed. Since the above-mentioned clamping mechanism can only clamp one workpiece at a time, it cannot clamp multiple workpieces simultaneously, which may limit the use scenarios of workpiece fixing.

[0004] In view of the above problems, the utility model provides a compression fixing mechanism. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the above-mentioned technical deficiencies and provides a compression fixing mechanism that can simultaneously compress and fix multiple products, thereby improving the efficiency of product clamping and fixing.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A compression fixing mechanism includes a rack, a plurality of compression fixtures installed on the rack along the left-right direction, and a hand-operated link transmission mechanism. The compression fixture includes a fixed vertical plate fixed relative to the rack and a movable vertical plate parallel to the fixed vertical plate. The hand-operated link transmission mechanism includes a linkage rod extending along the left-right direction. The linkage rod is connected to the movable vertical plate. The hand-operated link transmission mechanism can drive the movable vertical plate to move closer to or further away from the fixed vertical plate by driving the linkage rod to move left or right.

[0008] Preferably, the rack includes two transverse support plates extending along the left-right direction. The left ends of the two transverse support plates are connected by a longitudinal mounting plate. The right ends of the two transverse support plates are connected by a mounting seat. The hand-operated link transmission mechanism includes a hand-operated drive assembly installed on the mounting seat. The power output end of the hand-operated drive assembly is in transmission connection with the right end of the linkage rod. The left end of the linkage rod is in movable connection with the longitudinal mounting plate.

[0009] Preferably, the fixed vertical plate is provided with connecting protrusions on both front and back sides, and the top of the horizontal support plate is provided with first clamping grooves for clamping the connecting protrusions.

[0010] Preferably, the linkage rod comprises a plurality of connecting links and interval links, the adjacent two connecting links are connected through the interval links, the diameter of the interval link is larger than that of the connecting link, the linkage rod is located below the movable vertical plate, and the bottom of the movable vertical plate is provided with second clamping grooves for clamping the connecting links.

[0011] Preferably, the hand-driven driving assembly comprises a transmission gear, a speed reduction gear meshing with the transmission gear, a first hand crank, and a lead screw, the center of the transmission gear is connected with the shaft center of the first hand crank through a first rotating shaft, the mounting base is provided with a movable base, and the right end of the linkage rod is fixedly connected with the movable base; the movable base is provided with a first bearing seat, the mounting base is fixedly provided with a second bearing seat, and the lead screw is drivingly connected with the center of the speed reduction gear, the first bearing seat and the second bearing seat in sequence.

[0012] Preferably, the pressing and fixing mechanism further comprises a bidirectional self-locking assembly, the bidirectional self-locking assembly comprises a support, a ratchet wheel, two pawls, and a pushing assembly located between the two pawls; the lead screw passes through the center of the ratchet wheel and is fixedly connected with the ratchet wheel, one end of the pawl is hinged with the support, the other end of the pawl is used for meshing with the ratchet wheel so that the ratchet wheel can only rotate clockwise / counterclockwise, and the pushing assembly is used for simultaneously driving the end of one pawl to mesh with the ratchet wheel and the end of the other pawl to be separated from the ratchet wheel.

[0013] Preferably, the pushing assembly comprises a pushing piece located between the two pawls and a second hand crank, the shaft center of the second hand crank is connected with the support through a second rotating shaft, and the center of the pushing piece is drivingly connected with the shaft center of the second hand crank; the pushing piece is driven to rotate by the second hand crank so as to push the two pawls.

[0014] Preferably, the side edge of the pawl is connected with the support through a self-locking spring.

[0015] Preferably, the support comprises a positioning plate arranged between the second hand crank and the pushing piece, the positioning plate is provided with two positioning blocks, and the second hand crank rotates between the two positioning blocks.

[0016] Preferably, the fixed vertical plate and the movable vertical plate are movably connected through a guide rod.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] 1.The utility model discloses a linkage rod drives the movable vertical plate to move to fixed vertical plate, to press together and fix the product between movable vertical plate and fixed vertical plate.

[0019] 2.The utility model discloses a bidirectional self -locking assembly can ensure that the first hand crank clockwise or counterclockwise direction's self -locking, guarantee during the press together and fix the product of press together fixture, first hand crank can only rotate in one direction, avoid the first hand crank suddenly reverse rotation and lead to the condition of press together fixture to loosen product, or avoid during the press together fixture loosens product, the first hand crank suddenly reverse rotation and lead to the condition of press together fixture to press the product.

[0020] 3.The bidirectional self -locking assembly drives the end of a pawl and ratchet wheel engagement through the component of stirring, and the end of another pawl is separated from the ratchet wheel, and the operation is simple, and the component of stirring is simple in structure.

[0021] 4.The distance between movable vertical plate and fixed vertical plate is adjustable, so that press together fixture can hold the product of different thickness, and the flexibility is strong. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the overall schematic view of the press together and fix the mechanism of press together fixture.

[0023] Figure 2 It is the structure schematic view of hand -operated connecting rod transmission mechanism and bidirectional self -locking assembly.

[0024] Figure 3 It is the structure schematic view of mounting seat.

[0025] Figure 4 It is the overall schematic view of the press together and fix the mechanism of press together fixture.

[0026] Figure 5 It is the overall schematic view of the press together and fix the mechanism of press together fixture.

[0027] The implementation, functional characteristics and advantages of the utility model will be further explained in combination with embodiments, with reference to the drawings. DETAILED DESCRIPTION

[0028] The features of the utility model and other related features are further explained in detail through embodiments, so as to facilitate the understanding of the same industry technical personnel:

[0029] Referring to Figures 1 to 5 , the utility model discloses an embodiment of a compression fixing mechanism:

[0030] A compression fixing mechanism, comprising a rack 1. The rack 1 is provided with a plurality of compression fixtures 2 (only one compression fixture 2 is shown in the drawing, and actually a plurality of compression fixtures 2 can be assembled) and a hand-operated connecting rod transmission mechanism 3 along the left-right direction. The compression fixture 2 comprises a fixed vertical plate 21 fixed relative to the rack 1 and a movable vertical plate 22 parallel to the fixed vertical plate 21. The hand-operated connecting rod transmission mechanism 3 comprises a linkage rod 31 extending along the left-right direction, and the linkage rod 31 is connected to the movable vertical plate 22. The hand-operated connecting rod transmission mechanism 3 can drive the movable vertical plate 22 to move close to or away from the fixed vertical plate 21 by driving the linkage rod 31 to move leftward or rightward.

[0031] As Figure 4 shown, the rack 1 comprises two transverse support plates 11 extending along the left-right direction, and the left ends of the two transverse support plates 11 are connected by a longitudinal mounting plate 12, and the right ends of the two transverse support plates 11 are connected by a mounting seat 4. The hand-operated connecting rod transmission mechanism 3 comprises a hand-operated driving assembly mounted on the mounting seat 4, and the power output end of the hand-operated driving assembly is in transmission connection with the right end of the linkage rod 31. The left end of the linkage rod 31 is movably connected to the longitudinal mounting plate 12.

[0032] The fixed vertical plate 21 is provided with a connecting protrusion 211 on each of the front and rear sides, and the transverse support plate 11 is provided with a first clamping groove 111 on the top. The fixed vertical plate 21 is connected to the rack 1 through the connecting protrusion 211 and the first clamping groove 111. Moreover, the fixed vertical plate 21 can be disassembled relative to the rack 1, which facilitates the maintenance and disassembly of the fixed vertical plate 21.

[0033] The linkage rod 31 comprises a plurality of connecting segments 311 and spacing segments 312. Adjacent two connecting segments 311 are connected by a spacing segment 312, and the diameter of the spacing segment 312 is greater than that of the connecting segment 311. The linkage rod 31 is located below the movable vertical plate 22, and the movable vertical plate 22 is provided with a second clamping groove 221 on the bottom. The movable vertical plate 22 is clamped to the connecting segment 311 through the second clamping groove 221, so that the movable vertical plate 22 is fixedly connected to the linkage rod 31, and the connection mode is simple.

[0034] As Figure 2As shown, the hand-driven driving assembly includes a transmission gear 32, a speed reduction gear 33 engaged with the transmission gear 32, a first hand crank 34, and a screw rod 35. The center of the transmission gear 32 is connected with the shaft center of the first hand crank 34 through a first rotating shaft. The mounting base 4 is provided with a movable base 41. The right end of the linkage rod 31 is fixedly connected with the movable base 41. The movable base 41 is provided with a first bearing seat 42. The mounting base 4 is fixedly provided with a second bearing seat 43. The screw rod 35 is in turn drivingly connected with the center of the speed reduction gear 33, the first bearing seat 42, and the second bearing seat 43.

[0035] As shown in the drawings, Figure 3 Specifically, the mounting base 4 includes a first connecting plate 44, a second connecting plate 45, and a spacing plate 46. The first connecting plate 44 and the second connecting plate 45 both extend in the front-rear direction. The spacing plate 46 extends in the left-right direction. The first connecting plate 44 is used for connecting the right ends of the two transverse support plates 11. The first connecting plate 44 and the second connecting plate 45 are connected through the spacing plate 46. The movable base 41 is located between the first connecting plate 44 and the second connecting plate 45. The second bearing seat 43 is fixedly mounted on the first connecting plate 44. The first connecting plate 44 is provided with a through hole 441 for the linkage rod 31 to pass through. The second connecting plate 45 is provided with a third bearing seat 451. One end of the first rotating shaft is connected with the third bearing seat 451. The other end of the first rotating shaft is connected with the shaft center of the first hand crank 34.

[0036] The diameter of the speed reduction gear 33 is greater than that of the transmission gear 32, so that the angular velocity of the self-rotation of the linkage rod 31 is reduced, thereby reducing the speed of the linear motion of the linkage rod 31, and allowing the hand-driven linkage driving mechanism 3 to accurately adjust the moving stroke of the linkage rod 31, and thus accurately adjust the moving stroke of the movable vertical plate 22.

[0037] As shown in the drawings, Figure 2 The pressing and fixing mechanism further includes a bidirectional self-locking assembly 5. The bidirectional self-locking assembly 5 includes a bracket 51, a ratchet wheel 52, two pawls 53, and a pushing assembly located between the two pawls 53. The screw rod passes through the center of the ratchet wheel 52 and is fixedly connected with the ratchet wheel 52, so that the ratchet wheel 52 can rotate together with the speed reduction gear 33. One end of the pawl 53 is hingedly connected with the bracket 51. The other end of the pawl 53 is used for engaging with the ratchet wheel 52, so that the ratchet wheel 52 can only rotate clockwise / counterclockwise. The pushing assembly is used for simultaneously driving one end of one pawl 53 to engage with the ratchet wheel 52 and the other end of the other pawl 53 to disengage from the ratchet wheel 52.

[0038] The pushing assembly includes a pushing piece 54 located between the two pawls 53 and a second hand crank 55. The shaft center of the second hand crank 55 is connected with the bracket 51 through a second rotating shaft. The center of the pushing piece 54 is drivingly connected with the shaft center of the second hand crank 55. The pushing piece 54 is driven to rotate by the second hand crank 55, thereby pushing the two pawls 53.

[0039] The side of the pawl 53 is connected with the support 51 through the self-locking spring 56.

[0040] As shown in the figure, the support 51 comprises a positioning plate 57 arranged between the second hand crank 55 and the push piece 54, and the positioning plate 57 is provided with two positioning blocks 58, and the second hand crank 55 rotates between the two positioning blocks 58, so as to limit the rotating angle of the second hand crank 55, and further limit the position of the pawl 53. Figure 1

[0041] The fixed vertical plate 21 and the movable vertical plate 22 are movably connected through the guide rod, so that the opening and closing of the pressing fixture 2 is more stable.

[0042] The pressing and fixing product process and working principle of the utility model are as follows:

[0043] Firstly, the second hand crank 55 is rotated to abut against the positioning block 58 at the lower part of the positioning plate 57, the second hand crank 55 drives the pawl 53 above the push piece 54 to engage with the ratchet wheel 52, the pawl 53 above the push piece 54 is away from the ratchet wheel 52, and at this moment, under the limiting action of the bidirectional self-locking assembly 5, the first hand crank 34 can only rotate counterclockwise.

[0044] Then, the first hand crank 34 is counterclockwise rotated, the first hand crank 34 drives the transmission gear 32 to rotate, the transmission gear 32 drives the speed reducer 33 to rotate, and since the screw rod 35 is movably connected with the speed reducer 33, the ratchet wheel 52 and the transmission, the rotation of the speed reducer 33 will drive the screw rod 35 and the ratchet wheel 52 to rotate together.

[0045] During the rotation of the ratchet wheel 52, the ratchet wheel 52 will drive the pawl 53 above the push piece 54 to rotate upwards, but the support 51 is connected with the pawl 53 through the self-locking spring 56, and the self-locking spring 56 will reset the pawl 53, so that the pawl 53 is fluctuated up and down in cooperation with the ratchet wheel 52 during the continuous rotation of the ratchet wheel 52.

[0046] If the first hand crank 34 is suddenly clockwise rotated, the push piece 54 and the self-locking spring 56 will provide resistance to the reverse rotation of the ratchet wheel 52 through the pawl 53, so as to prevent the ratchet wheel 52 from rotating clockwise.

[0047] Meanwhile, during the rotation of the screw rod 35, since the second bearing seat 43 is fixed on the mounting base 4, the movable base 41 provided with the first bearing seat 42 is not fixed, so that the rotation of the screw rod 35 is converted into the linear motion of the movable base 41, and since the movable base 41 is fixedly connected with one end of the linkage rod 31, the movable base 41 will drive the linkage rod 31 and the movable vertical plate 22 to move rightward together, so that the movable vertical plate 22 moves towards the fixed vertical plate 21, and the product is pressed and fixed between the movable vertical plate 22 and the fixed vertical plate 21.

[0048] ​When the fixed clamping jaw needs to be loosened, first rotate the second hand crank 55 to abut against the positioning block 58 on the upper portion of the positioning plate 57, the second hand crank 55 drives the pawl 53 below the pawl 54 to engage with the ratchet wheel 52, the pawl 53 below the pawl 54 is away from the ratchet wheel 52, at this time, under the restriction of the bidirectional self-locking assembly 5, the first hand crank 34 can only rotate clockwise.

[0049] Then rotate the first hand crank 34 counterclockwise, the first hand crank 34 drives the transmission gear 32 to rotate, the transmission gear 32 drives the reduction gear 33 to rotate, since the screw rod 35 connects the reduction gear 33, the ratchet wheel 52 and the transmission, the rotation of the reduction gear 33 will drive the screw rod 35 and the ratchet wheel 52 to rotate together, the principle is the same as that of the product pressing and fixing.

[0050] The screw rod 35 drives the movable bottom, the linkage rod 31 and the movable vertical plate 22 to move left together, so that the movable vertical plate 22 is away from the fixed vertical plate 21, thereby loosening the product by the pressing fixture 2.

[0051] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, any equivalent structural transformation, direct or indirect application in other related technical fields by using the content of the present application specification and drawings, are also included in the patent protection range of the present application.

Claims

1. A press-fit fixing mechanism, characterized in that comprising a rack (1), a plurality of press-fit jigs (2) are installed along the left-right direction of the rack (1), a hand-operated connecting rod transmission mechanism (3), the press-fit jig (2) comprises a fixed vertical plate (21) fixed relative to the rack (1), and a movable vertical plate (22) parallel to the fixed vertical plate (21), the hand-operated connecting rod transmission mechanism (3) comprises a linkage rod (31) extending along the left-right direction, the linkage rod (31) is connected with the movable vertical plate (22), and the hand-operated connecting rod transmission mechanism (3) can drive the movable vertical plate (22) to move close to or away from the fixed vertical plate (21) by driving the linkage rod (31) to move left and right.

2. A press-fit securing mechanism according to claim 1, wherein The rack (1) comprises two transverse support plates (11) extending along the left-right direction, the left ends of the two transverse support plates (11) are connected by a longitudinal mounting plate (12), the right ends of the two transverse support plates (11) are connected by a mounting seat (4), the hand-operated connecting rod transmission mechanism (3) comprises a hand-operated driving assembly mounted on the mounting seat (4), and the power output end of the hand-operated driving assembly is in transmission connection with the right end of the linkage rod (31); the left end of the linkage rod (31) is movably connected with the longitudinal mounting plate (12).

3. A press-fit securing mechanism according to claim 2, wherein The fixed vertical plate (21) is provided with a connecting convex portion (211) on both sides, and the top of the transverse support plate (11) is provided with a first clamping groove (111) for clamping the connecting convex portion (211).

4. The press-fit securing mechanism of claim 1, wherein, The linkage rod (31) comprises a plurality of connecting links (311) and interval links (312), adjacent two connecting links (311) are connected through an interval link (312), the diameter of the interval link (312) is greater than that of the connecting link (311), the linkage rod (31) is located below the movable vertical plate (22), and the bottom of the movable vertical plate (22) is provided with a second clamping groove (221) for clamping the connecting link (311).

5. A press-fit securing mechanism according to claim 2, wherein The hand-operated driving assembly comprises a transmission gear (32), a speed reduction gear (33) in meshing connection with the transmission gear (32), a first hand crank (34), and a lead screw (35), the center of the transmission gear (32) is connected with the shaft center of the first hand crank (34) through a first rotating shaft, the mounting seat (4) is provided with a movable base (41), and the right end of the linkage rod (31) is fixedly connected with the movable base (41); the movable base (41) is provided with a first bearing seat (42), the mounting seat (4) is fixedly provided with a second bearing seat (43), one end of the lead screw (35) is in transmission connection with the center of the speed reduction gear (33), and the lead screw (35) is in transmission connection with the center of the speed reduction gear (33), the first bearing seat (42) and the second bearing seat (43) in sequence.

6. A press-fit securing mechanism according to claim 5, wherein The bidirectional self-locking assembly (5) comprises a support (51), a ratchet wheel (52), two pawls (53) and a shifting assembly between the two pawls (53); the screw rod passes through the center of the ratchet wheel (52) and is fixedly connected with the ratchet wheel (52), one end of the pawl (53) is hingedly connected with the support (51), the other end of the pawl (53) is used for engaging with the ratchet wheel (52) so that the ratchet wheel (52) can only rotate clockwise / counterclockwise, and the shifting assembly is used for simultaneously driving the end of one pawl (53) to engage with the ratchet wheel (52) and the end of the other pawl (53) to disengage from the ratchet wheel (52).

7. A press-fit securing mechanism according to claim 6, wherein The shifting assembly comprises a shifting piece (54) between the two pawls (53) and a second hand crank (55), the axis of the second hand crank (55) is connected with the support (51) through a second rotating shaft, the center of the shifting piece (54) is in transmission connection with the axis of the second hand crank (55), and the shifting piece (54) is driven to rotate by the second hand crank (55) so as to shift the two pawls (53).

8. A press-fit securing mechanism according to claim 6, wherein The side of the pawl (53) is connected with the support (51) through a self-locking spring (56).

9. A press-fit securing mechanism according to claim 7, wherein The support (51) comprises a positioning plate (57) arranged between the second hand crank (55) and the shifting piece (54), two positioning blocks (58) are arranged on the positioning plate (57), and the second hand crank (55) rotates between the two positioning blocks (58).

10. The press-fit anchoring mechanism of claim 1, wherein, The fixed vertical plate (21) and the movable vertical plate (22) are movably connected through the guide rods.

Images