Gear rack limiting adjustable centering mechanism

Abstract

The utility model discloses a gear and rack limiting adjustable centering mechanism, and relates to the technical field of gear and rack limiting, the gear and rack limiting adjustable centering mechanism comprises a bottom plate, a sliding rod, a centering clamping mechanism I, a centering clamping mechanism II and a driving mechanism, the sliding rod is fixedly connected to the upper surface of one side of the bottom plate, the upper surface of the bottom plate is fixedly connected with a side plate, and the driving mechanism is installed in the middle of the front side face of the side plate; the driving mechanism comprises a motor which is fixedly connected to the front side face of the side plate, the output end of the motor is fixedly connected with a gear, the upper end of the front side face of the side plate is fixedly connected with an upper limiting block, and the lower end of the front side face of the side plate is fixedly connected with a lower limiting block. Through cooperation of the structures, when mechanical workpieces of different sizes are adjusted and clamped, the moving range of the upper rack and the moving range of the lower rack are limited, and safety and stability in the using process are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear rack limiting, in particular to a gear rack limiting adjustable centering mechanism. Background Art

[0002] The gear rack limit adjustable centering mechanism is a precise mechanical mechanism that mainly realizes the centering function through the engagement of the gear and the rack.

[0003] The utility model with announcement number CN208214891U discloses an automatic centering clamping mechanism for a gear rack, including a base, a cylinder arranged on the base and a clamping unit; the clamping unit includes a slide rail, a gear arranged on the slide rail, an upper slider unit and a lower slider unit symmetrically arranged on the upper and lower sides of the gear, and an upper rack and a lower rack arranged on the left and right sides of the gear and respectively engaged with the gear; the upper slider unit includes an upper slider and an upper clamping block connected to the upper slider; the upper slider is connected to the upper rack; the lower slider is connected to the lower rack; the lower slider unit includes a lower slider and a lower clamping block connected to the lower slider; the upper clamping block includes an upper clamping seat connected to the upper slider and an upper clamping head detachably connected to the upper clamping seat; the lower clamping block includes a lower clamping seat connected to the lower slider and a lower clamping head detachably connected to the lower clamping seat.

[0004] During the implementation of this application, it was found that the technology has the following problems: the gear in the above patent document is separately arranged between the two racks without any fixing mechanism, and there is no restrictive structure at the end where the two racks are close to each other. When the upper slider and the lower slider move away from each other, the teeth of the gear and the rack may be disengaged. The uncontrolled clamping mechanism may pose a safety threat to the operator, and the overall safety and stability during use are poor.

[0005] For this purpose, we propose a gear rack limit adjustable centering mechanism. Utility Model Content

[0006] The purpose of the present utility model is to limit the movement range of the upper rack and the lower rack when adjusting and clamping mechanical workpieces of different sizes, thereby improving safety and stability during use. The present application provides an adjustable centering mechanism for the gear rack.

[0007] The technical solutions adopted in this utility model are as follows:

[0008] The gear rack limit adjustable centering mechanism comprises a base plate, a sliding rod, a centering clamping mechanism 1, a centering clamping mechanism 2 and a driving mechanism, the sliding rod is fixedly connected to the upper surface of one side of the base plate, the upper surface of the base plate is fixedly connected to the side plate, the driving mechanism is installed in the middle of the front side surface of the side plate, the driving mechanism comprises a motor, the motor is fixedly connected to the front side surface of the side plate, the output end of the motor is fixedly connected to a gear, the upper end of the front side surface of the side plate is fixedly connected to an upper limit block, and the lower end of the front side surface of the side plate is fixedly connected to a lower limit block;

[0009] The centering clamping mechanism includes an upper connecting block and an upper slide plate, the upper slide plate is slidably connected to the outer surface of the slide rod, and the side of the upper slide plate away from the slide rod is fixedly connected to the upper connecting block, and the lower surface of one side of the upper connecting block is fixedly connected to the upper rack, and the lower surface of the other side of the upper connecting block is provided with an upper groove, and one end of the upper rack away from the upper connecting block is fixedly connected to the upper limit bar, and the side of the upper connecting block away from the side plate is fixedly connected to the upper clamping block;

[0010] The locking mechanism is configured to lock the locking cam of the locking cam, wherein the locking cam is secured to the locking cam of the hinged mounting plate and secured to the locking cam of the lock member. The locking cam is configured to lock the locking cam of the lock member. The locking cam is then engaged to the locking cam of the lock member.

[0011] Furthermore, an anti-fall-off block is fixedly connected to the upper surface of the sliding rod.

[0012] Furthermore, one end of the lower limit bar away from the lower rack abuts against the upper surface of the lower limit block, and one end of the upper limit bar away from the upper rack abuts against the lower surface of the upper limit block.

[0013] Furthermore, the outer surface of the upper limit bar is slidably connected to the inner surface of the lower groove, and the outer surface of the lower limit bar is slidably connected to the inner surface of the upper groove.

[0014] Furthermore, the length of the upper limit bar is greater than the length of the lower groove, and the length of the lower limit bar is greater than the length of the upper groove.

[0015] Furthermore, the input end of the motor is electrically connected to an external power supply.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] When the upper and lower connecting blocks are close to each other, the upper rack can drive the upper limit bar to slide into the lower groove until the upper limit bar is in the upper position. When the upper and lower connecting blocks are moved away from each other, the upper rack moving upwards will drive the upper limit bar to move upwards to the uppermost end, and the upper surface of the upper limit bar will abut against the lower surface of the upper limit block. When the lower connecting block moving downwards drives the lower limit bar to move downwards to the lowermost end, the lower surface of the lower limit bar will abut against the upper surface of the lower limit block, thereby further limiting the moving range of the rack. Through the cooperation of the above structure, the moving range of the upper and lower racks can be limited when adjusting and clamping mechanical workpieces of different sizes, thereby improving safety and stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the upper rack, lower rack and gear in the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 It is a bottom view of the present utility model.

[0022] Markings in the figure: 1-base plate, 2-slide rod, 3-centering clamping mechanism 1, 4-centering clamping mechanism 2, 5-driving mechanism, 11-side plate, 12-upper limit block, 13-lower limit block, 21-anti-slip block, 31-upper connecting block, 32-upper rack, 33-upper limit bar, 34-upper groove, 35-upper slide, 36-upper clamping block, 41-lower connecting block, 42-lower rack, 43-lower limit bar, 44-lower groove, 45-lower slide, 46-lower clamping block, 51-motor, 52-gear. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention. Example

[0024] Reference Figures 1-4 , the gear rack limit adjustable centering mechanism includes a base plate 1, a slide bar 2, a centering clamping mechanism 3, a centering clamping mechanism 2 4 and a driving mechanism 5. The slide bar 2 is fixedly connected to the upper surface of one side of the base plate 1, and the upper surface of the slide bar 2 is fixedly connected with an anti-slip block 21. The upper surface of the base plate 1 is fixedly connected with a side plate 11. The driving mechanism 5 is installed in the middle of the front side of the side plate 11. The driving mechanism 5 includes a motor 51, which is fixedly connected to the front side of the side plate 11. The output end of the motor 51 is fixedly connected to a gear 52, and the input end of the motor 51 is electrically connected to an external power supply; specifically, starting the motor 51 can make the gear 52 rotate, so that the mechanical workpiece can be clamped by using the centering clamping mechanism 3 and the centering clamping mechanism 2 4.

[0025] Reference Figures 1-4 The centering clamping mechanism 3 includes an upper connecting block 31 and an upper slide 35. The upper slide 35 is slidably connected to the outer surface of the slide bar 2. The side of the upper slide 35 away from the slide bar 2 is fixedly connected to the upper connecting block 31. The lower surface of one side of the upper connecting block 31 is fixedly connected to the upper rack 32. The side of the upper connecting block 31 away from the side plate 11 is fixedly connected to the upper clamping block 36. The centering clamping mechanism 2 4 includes a lower connecting block 41 and a lower slide 45. The lower slide 45 is slidably connected to the outer surface of the slide bar 2. The side of the lower slide 45 away from the slide bar 2 is fixedly connected to the lower connecting block 41. The upper surface of one side of the lower connecting block 41 is fixedly connected to the lower rack 42. The side of the lower connecting block 41 away from the side plate 11 is fixedly connected to the lower clamping block 46. The outer surface of the gear 52 The surface teeth mesh with the teeth on one side of the upper rack 32 and the lower rack 42; specifically, when the mechanical workpiece is to be centered and clamped, the workpiece can be placed between the upper clamping block 36 and the lower clamping block 46, and then the motor 51 is started to rotate the gear 52. The rotating gear 52 drives the meshed upper rack 32 to move downward, and at the same time drives the meshed lower rack 42 to move upward, thereby driving the upper connecting block 31 and the lower connecting block 41 to approach each other, so that the upper clamping block 36 and the lower clamping block 46 are close to each other for centering and clamping the mechanical workpiece; conversely, the upper connecting block 31 and the lower connecting block 41 can be moved away from each other, thereby adjusting the distance between the upper clamping block 36 and the lower clamping block 46 to clamp mechanical workpieces of different sizes.

[0026] Reference Figures 1-4 The cam 33 is fixed to the upper end of the support 31 and the support 32 is fixed to the support 31. The cam 33 is fixed to the upper end of the support 31 and the support 32 is fixed to the support 31. The cam 33 is fixed to the support 31 and the support 32 is fixed to the support 31. When the upper and lower limit blocks 31 and 32 are moved apart, the upper and lower limit blocks 33 are pressed against each other, thereby further limiting the movement range of the rack.

[0027] The implementation principle of the embodiment of the gear rack limit adjustable centering mechanism of the present application is:

[0028] When using this device, an external power supply is connected for a limited time. When centering and clamping a mechanical workpiece, the workpiece can be placed between the upper clamping block 36 and the lower clamping block 46, and then the motor 51 is started to rotate the gear 52. The rotating gear 52 drives the meshing upper rack 32 to move downward, and at the same time drives the meshing lower rack 42 to move upward, thereby driving the upper connecting block 31 and the lower connecting block 41 to approach each other, so that the upper clamping block 36 and the lower clamping block 46 are close to each other to center and clamp the mechanical workpiece; conversely, the upper connecting block 31 and the lower connecting block 41 can be moved away from each other, thereby adjusting the distance between the upper clamping block 36 and the lower clamping block 46 to clamp mechanical workpieces of different sizes.

[0029] When the upper connecting block 31 and the lower connecting block 41 are close to each other, the upper rack 32 can drive the upper limit bar 33 to slide into the lower groove 44 until the upper limit bar 33 abuts against the inner bottom surface of the lower groove 44. Similarly, the lower rack 42 will also drive the lower limit bar 43 to abut against the top wall of the upper groove 34, thereby limiting the movement range of the rack; when the upper connecting block 31 and the lower connecting block 41 are away from each other, the upper rack 32 moving upward will drive the upper limit bar 33 to move upward to the upper end, and the upper surface of the upper limit bar 33 will abut against the lower surface of the upper limit block 12. When the lower connecting block 41 moving downward drives the lower limit bar 43 to move downward to the lower end, the lower surface of the lower limit bar 43 will abut against the upper surface of the lower limit block 13, thereby further limiting the movement range of the rack; through the cooperation of the above structure, the movement range of the upper rack 32 and the lower rack 42 can be limited when adjusting and clamping mechanical workpieces of different sizes, thereby improving safety and stability during use.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A centering mechanism with adjustable gear rack limit, comprising a base plate (1), a slide bar (2), a centering clamping mechanism 1 (3), a centering clamping mechanism 2 (4) and a driving mechanism (5), characterized in that: The slide bar (2) is fixedly connected to the upper surface of one side of the base plate (1), the upper surface of the base plate (1) is fixedly connected to the side plate (11), the drive mechanism (5) is installed in the middle of the front side of the side plate (11), the drive mechanism (5) includes a motor (51), the motor (51) is fixedly connected to the front side of the side plate (11), the output end of the motor (51) is fixedly connected to the gear (52), the upper end of the front side of the side plate (11) is fixedly connected to the upper limit block (12), and the lower end of the front side of the side plate (11) is fixedly connected to the lower limit block (13); The centering clamping mechanism (3) includes an upper connecting block (31) and an upper slide (35), wherein the upper slide (35) is slidably connected to the outer surface of the slide bar (2), and the side of the upper slide (35) away from the slide bar (2) is fixedly connected to the upper connecting block (31), the lower surface of one side of the upper connecting block (31) is fixedly connected to an upper rack (32), and the lower surface of the other side of the upper connecting block (31) is provided with an upper groove (34), the end of the upper rack (32) away from the upper connecting block (31) is fixedly connected to an upper limit bar (33), and the side of the upper connecting block (31) away from the side plate (11) is fixedly connected to an upper clamping block (36); The centering clamping mechanism 2 (4) includes a lower connecting block (41) and a lower slide plate (45), the lower slide plate (45) is slidably connected to the outer surface of the slide bar (2), the lower slide plate (45) is fixedly connected to the lower connecting block (41) on a side away from the slide bar (2), a lower rack (42) is fixedly connected to the upper surface of one side of the lower connecting block (41), a lower groove (44) is provided on the upper surface of the other side of the lower connecting block (41), the lower rack (42) is fixedly connected to the end away from the lower connecting block (41) with a lower limit bar (43), the lower connecting block (41) is fixedly connected to the side away from the side plate (11) with a lower clamping block (46), and the outer surface teeth of the gear (52) are meshed with the teeth of the upper rack (32) and the lower rack (42) close to one side.

2. The rack and pinion limit adjustable centering mechanism according to claim 1, characterized in that: An anti-slip block (21) is fixedly connected to the upper surface of the slide rod (2).

3. The rack and pinion limit adjustable centering mechanism according to claim 1, characterized in that: One end of the lower limit bar (43) away from the lower rack (42) abuts against the upper surface of the lower limit block (13), and one end of the upper limit bar (33) away from the upper rack (32) abuts against the lower surface of the upper limit block (12).

4. The rack and pinion limit adjustable centering mechanism according to claim 1, characterized in that: The outer surface of the upper limit strip (33) is slidably connected to the inner surface of the lower groove (44), and the outer surface of the lower limit strip (43) is slidably connected to the inner surface of the upper groove (34).

5. The rack and pinion limit adjustable centering mechanism according to claim 4, characterized in that: The length of the upper limit strip (33) is greater than the length of the lower groove (44), and the length of the lower limit strip (43) is greater than the length of the upper groove (34).

6. The rack and pinion limit adjustable centering mechanism according to claim 1, characterized in that: The input end of the motor (51) is electrically connected to an external power supply.

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