Nest plate correcting and positioning mechanism

Abstract

The invention provides a nest plate correcting and positioning mechanism. The nest plate correcting and positioning mechanism comprises a bottom plate, a linear cam, a pressing mechanism and a nest plate positioning plate. The linear cam and the nest plate positioning plate are arranged on the bottom plate, and the pressing mechanism comprises a pressing block in transmission connection with the linear cam. The four pressing mechanisms are located at the four corners of the nest plate correspondingly and symmetrically arranged on the periphery of the nest plate positioning plate. The linear cam horizontally moves to drive the pressing block to ascend and descend, so that the nest plate placed on the nest plate positioning plate is pressed or released. The pressing mechanisms are driven by the linear cams to achieve accurate positioning and effective correction of the nest plate, the problem that needle cylinders are difficult to take and place due to deformation of the nest plate is solved, meanwhile, uniform distribution of pressing force is ensured through symmetrical arrangement of the multiple sets of pressing mechanisms, and the success rate of the downstream needle cylinder taking procedure is increased.

Description

Technical Field

[0001] The present application relates to the technical field of medical device processing equipment, and in particular to a nest plate correction and positioning mechanism. Background Art

[0002] At present, syringe barrels in medical device production are usually positioned and processed using nest plates. Since the nest plate is made of plastic, it will be concave in the middle and high around. When the glass syringe is placed in these deformed nest plates, it will not be straight, which seriously affects the normal operation of the downstream syringe removal mechanism. At the same time, due to the deformation, the nest plate will not be positioned accurately, which will also affect the success rate of syringe removal.

[0003] In the prior art, the commonly used center positioning plate only has the function of supporting, and does not involve the function of pressing the four corners of the nesting plate, and does not have the function of correcting the nesting plate. This makes the nesting plate easy to deform during placement and use, affecting the stability and processing accuracy of the production process. In addition, the positioning of the nesting plate in the prior art is not accurate enough, resulting in positioning deviation in subsequent processes, reducing production efficiency.

[0004] Therefore, it is urgent to provide a mechanism for correcting and positioning the nest plate. Summary of the invention

[0005] The object of the present invention is to provide a nest plate correction and positioning mechanism for solving the technical problems in the prior art that the nest plate is easily deformed and inaccurately positioned.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides a nest plate correction and positioning mechanism, comprising:

[0007] Base plate;

[0008] A linear cam disposed on the base plate;

[0009] A clamping mechanism, the clamping mechanism comprising a clamping block drivingly connected to the linear cam; and a nest plate positioning plate arranged on the bottom plate;

[0010] The horizontal movement of the linear cam drives the pressing block to rise and fall, so as to press or release the nesting plate placed on the nesting plate positioning plate.

[0011] Optionally, the clamping mechanism is provided with four groups, which are respectively located at four corners of the nest plate and are symmetrically arranged around the nest plate positioning plate.

[0012] Optionally, the pressing mechanism further includes:

[0013] A support block, wherein the support block is fixed on the bottom plate, and one end of the pressing block is rotatably connected to the top of the support block;

[0014] An L-shaped transition block, wherein a roller is mounted on the lower end of the L-shaped transition block, and the upper end of the L-shaped transition block is rotatably connected to the support block, and the roller is in rolling contact with the upper surface of the linear cam;

[0015] A connecting block, both ends of which are hinged to the pressing block and the L-shaped transition block respectively; and

[0016] A tension spring, one end of which is connected to the support block, and the other end of which is connected to the connection block.

[0017] Optionally, the support block includes a first support block and a second support block that are arranged opposite to each other, the first support block and the second support block are both fixed to the bottom plate, and the linear cam passes through a gap between the first support block and the second support block.

[0018] Optionally, it further includes a tension spring fixing shaft, which is arranged on the first supporting block, and one end of the tension spring is connected to the tension spring fixing shaft.

[0019] Optionally, an upper surface of the linear cam is provided with an inclined surface, and the inclined surface cooperates with a roller of the clamping mechanism to convert the horizontal movement of the linear cam into the vertical movement of the pressing block.

[0020] Optionally, it also includes: a lateral roller, which is installed on the bottom plate and contacts the side surface of the linear cam when the linear cam moves.

[0021] Optionally, it also includes: a vertical roller assembly, which includes a vertical roller groove fixed on the base plate, and a vertical roller installed on the linear cam; the vertical roller rolls in the vertical roller groove to guide the horizontal movement of the linear cam.

[0022] Optionally, it also includes reset components respectively arranged on both sides of the linear cam, and the reset components drive the linear cam to reset in the horizontal direction after the linear cam completes the clamping action.

[0023] Optionally, the reset component includes:

[0024] A guide rod, the guide rod is fixedly arranged on the bottom plate;

[0025] a return spring, wherein the return spring is sleeved on the guide rod; and

[0026] A limit slider, one end of which is fixed on the linear cam and the other end is sleeved on the guide rod, and the return spring is compressed or restored as the linear cam moves.

[0027] Optionally, the nest board positioning plates enclose a nest board placement area, and the nest board positioning plates are provided with chamfers corresponding to the pressing blocks at the edges of the nest board placement area.

[0028] Optionally, the nest plate placement area is provided with a plurality of through holes, and the arrangement of the through holes corresponds to the positions of the syringes on the nest plate.

[0029] The present invention provides a linear cam and a clamping mechanism on the bottom plate, and utilizes the horizontal movement of the linear cam to drive the pressing block to rise and fall, thereby achieving effective clamping and correction of the nest plate and solving the problem of nest plate deformation. At the same time, the arrangement of the nest plate positioning plate ensures the precise positioning of the nest plate, thereby improving the success rate of the downstream syringe removal process.

[0030] Furthermore, the clamping mechanism in the present invention realizes the smooth transmission of the linear cam motion through the cooperation of the L-shaped transition block, the roller and the tension spring; the provision of the reset assembly ensures that the linear cam can be reliably reset; the provision of the vertical roller assembly and the lateral roller ensures the stability and guidance of the linear cam motion, thereby improving the overall working reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the nest plate structure in the embodiment of the present invention Figure 1 ;

[0032] Figure 2 Schematic diagram of the nest plate structure in the embodiment of the present invention Figure 2 ;

[0033] Figure 3 This is a schematic diagram of the state of the syringe before correction in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the state of the syringe after correction in an embodiment of the present invention;

[0035] Figure 5 It is a structural schematic diagram of the nest plate correction and positioning mechanism in the embodiment of the present invention when it is in position one;

[0036] Figure 6 It is a structural schematic diagram of the nest plate correction and positioning mechanism in the embodiment of the present invention when it is in position two;

[0037] Figure 7 The structure diagram of the clamping mechanism in the embodiment of the present invention when it is in position 1 Figure 1 ;

[0038] Figure 8 The structure diagram of the clamping mechanism in the embodiment of the present invention when it is in position 2 Figure 1 ;

[0039] Fig. 9The structure diagram of the clamping mechanism in the embodiment of the present invention when it is in position 1 Figure 2 ;

[0040] Fig.10 The structure diagram of the clamping mechanism in the embodiment of the present invention when it is in position 2 Figure 2 .

[0041] In the figure, 1, bottom plate; 2, linear cam; 3, clamping mechanism; 31, support block; 32, tension spring fixing shaft; 33, tension spring; 34, L-shaped transition block; 35, roller; 36, connecting block; 37, pressing block; 4, lateral roller; 5, vertical roller groove; 6, vertical roller; 7, reset spring; 71, limit slider; 8, guide rod; 9, nest plate positioning plate; 91, nest plate; 911, syringe; 10, nest plate placement area. DETAILED DESCRIPTION

[0042] The scheme of the present invention will be described below in conjunction with the schematic diagram, wherein the preferred embodiment of the present invention is shown, and it should be understood that those skilled in the art can modify the present invention described herein, and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art, and not as a limitation of the present invention.

[0043] The serial numbers of the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and are not in exact proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0046] like Figure 1-Figure 4 As shown, since the nest plate 91 is made of plastic, it will be concave in the middle and high around. When the glass syringe 91 is placed in these deformed nest plates 91, it will not be straight, which seriously affects the normal operation of the downstream mechanism for taking the syringe 911. Figure 4 As shown, after the nest plate 91 is corrected by a nest plate correction and positioning mechanism provided in this embodiment, the problem of deformation of the nest plate 91 is solved.

[0047] The embodiment of the present invention provides a nest plate correction and positioning mechanism, such as Figure 5-Figure 6 As shown, it includes a base plate 1, a linear cam 2 arranged on the base plate 1, a clamping mechanism 3 and a nest plate positioning plate 9 arranged on the base plate 1.

[0048] The bottom plate 1 serves as a basic support platform for the entire mechanism. The linear cam 2 and the nest plate positioning plate 9 are arranged on the bottom plate 1, and the clamping mechanism 3 includes a clamping block 37 which is transmission-connected to the linear cam 2. The horizontal movement of the linear cam 2 drives the clamping block 37 to rise and fall, thereby achieving the clamping or release of the nest plate placed on the nest plate positioning plate 9.

[0049] In a specific example, the clamping mechanism 3 is provided with four groups, which are respectively located at the four corners of the nest plate 91 and symmetrically arranged around the nest plate positioning plate 9. This arrangement can ensure that the nest plate 91 is evenly stressed and avoid deflection during the clamping process.

[0050] like Figure 7-Figure 10 As shown, each group of the clamping mechanism 3 also includes:

[0051] The support block 31 is fixed on the bottom plate 1 , and one end of the pressing block 37 is rotatably connected to the top of the support block 31 .

[0052] The L-shaped transition block 34 has a roller 35 installed at its lower end and its upper end is rotatably connected to the support block 31 . The roller 35 is in rolling contact with the upper surface of the linear cam 2 .

[0053] The connecting block 36 has two ends hinged to the pressing block 37 and the L-shaped transition block 34 respectively.

[0054] A tension spring 33 , one end of which is connected to the support block 31 , and the other end of which is connected to the connection block 36 .

[0055] For further information, please refer to Figure 9-10 The support block 31 includes a first support block and a second support block that are arranged opposite to each other. The first support block and the second support block are both fixed on the base plate 1, and the linear cam 2 passes through the gap between the first support block and the second support block.

[0056] Furthermore, it also includes a tension spring fixing shaft 32 , which is arranged on the first supporting block, and one end of the tension spring 33 is connected to the tension spring fixing shaft 32 .

[0057] For further information, please refer to Figure 7-Figure 8 The upper surface of the linear cam 2 is provided with an inclined surface, and the inclined surface cooperates with the roller 35 of the clamping mechanism 3 to convert the horizontal movement of the linear cam 2 into the vertical movement of the pressing block 37.

[0058] In a specific example, the inclined surface can be designed with a suitable inclination angle according to actual needs to obtain an ideal pressing force.

[0059] Furthermore, in order to ensure the stability of the horizontal movement of the linear cam 2, the structure provided by the present invention also includes a lateral roller 4, which is installed on the bottom plate 1 and contacts the side surface of the linear cam 2 when the linear cam 2 moves.

[0060] In a specific example, the lateral roller 4 can be made of wear-resistant material to extend the service life.

[0061] Furthermore, the present invention also includes a vertical roller assembly, including a vertical roller groove 5 fixed on the base plate 1 , and a vertical roller 6 installed on the linear cam 2 .

[0062] Specifically, the vertical roller 6 rolls in the vertical roller groove 5 to guide the horizontal movement of the linear cam 2 .

[0063] The provision of the vertical roller assembly further improves the smoothness of the movement of the linear cam 2 .

[0064] In this embodiment, in order to realize the automatic resetting function, resetting components are respectively arranged on both sides of the linear cam 2, and the resetting components drive the linear cam 2 to reset in the horizontal direction after the linear cam 2 completes the pressing action.

[0065] The reset assembly includes a guide rod 8, a reset spring 7 and a limit slider 71. The guide rod 8 is fixedly arranged on the bottom plate 1, the reset spring 7 is sleeved on the guide rod 8, one end of the limit slider 71 is fixed on the linear cam 2, and the other end is sleeved on the guide rod 8. The reset spring 7 is compressed or restored with the horizontal movement of the linear cam 2. After the linear cam 2 completes the pressing action, the reset assembly can drive it to automatically reset in the horizontal direction.

[0066] Furthermore, the nest board positioning plates 9 enclose a nest board placement area 10, and the nest board positioning plates 9 are provided with chamfers corresponding to the pressing blocks 37 at the edges of the nest board placement area 10 to ensure that the pressing blocks 3-7 can stably contact the nest board edges.

[0067] Furthermore, the nest plate placement area 10 is provided with a plurality of through holes, and the arrangement of the through holes corresponds to the position of the syringe 911 on the nest plate 91. This design facilitates observation of the placement state of the syringe 911 and also facilitates subsequent processes.

[0068] In the actual working process, the working principle of the present invention is as follows:

[0069] The linear cam 2 moves horizontally toward the bottom plate 1 under the action of external force. During the movement, the inclined surface of the upper surface of the linear cam 2 rolls with the roller on the L-shaped transition block 34, so that the L-shaped transition block 34 is lifted. Since the L-shaped transition block 34 is hingedly connected to the pressing block 37 through the connecting block 36, the pressing block 37 is lifted upward. At the same time, the clamping mechanisms 3 at the four corners are all lifted, and the entire mechanism is in an open state; at this time, the reset spring 7 is compressed; the nesting plate 91 with the syringe 911 will be placed from top to bottom in the nesting plate placement area 10 surrounded by the nesting plate positioning plate 9.

[0070] After the nest plate 91 is placed, the linear cam 2 moves away from the bottom plate 1 under the action of external force. At this time, since the roller on the L-shaped transition block 34 rolls downward along the inclined surface of the upper surface of the linear cam 2, the tension of the tension spring 33 in the clamping mechanism 3 drives the connecting block 36, so that the pressing block 37 moves downward and presses the four corners of the nest plate 91. In this process, the return springs 7 on both sides rebound along the guide rod 8 until the linear cam 2 returns to the initial position.

[0071] In addition, during the entire movement process, the lateral rollers 4 and the vertical rollers 6 ensure that the linear cam 2 moves smoothly during horizontal movement to prevent jamming.

[0072] In summary, the beneficial effects of the present invention are that the linear cam drives the clamping mechanism to achieve precise positioning and effective correction of the nest plate, solving the problem of difficulty in taking and placing the syringe caused by deformation of the nest plate; the symmetrical arrangement of multiple groups of clamping mechanisms ensures uniform distribution of the clamping force; the automatic reset function of the mechanism is realized by the setting of the reset component; the overall structure is simple and compact, the operation is convenient, and the work is reliable.

[0073] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A nest plate correction and positioning mechanism, characterized in that: include: Base plate; A linear cam disposed on the base plate; A clamping mechanism, the clamping mechanism comprising a clamping block drivingly connected to the linear cam; as well as A nest plate positioning plate disposed on the bottom plate; The horizontal movement of the linear cam drives the pressing block to rise and fall, so as to press or release the nesting plate placed on the nesting plate positioning plate.

2. The nest plate correction and positioning mechanism according to claim 1, characterized in that: The clamping mechanism is provided with four groups, which are respectively located at the four corners of the nesting plate and are symmetrically arranged around the nesting plate positioning plate.

3. The nest plate correction and positioning mechanism according to claim 1, characterized in that: The clamping mechanism also includes: A support block, wherein the support block is fixed on the bottom plate, and one end of the pressing block is rotatably connected to the top of the support block; An L-shaped transition block, wherein a roller is mounted on the lower end of the L-shaped transition block, and the upper end of the L-shaped transition block is rotatably connected to the support block, and the roller is in rolling contact with the upper surface of the linear cam; A connecting block, both ends of which are hinged to the pressing block and the L-shaped transition block respectively; and A tension spring, one end of which is connected to the support block, and the other end of which is connected to the connection block.

4. The nest plate correction and positioning mechanism according to claim 3, characterized in that: The support block comprises a first support block and a second support block which are arranged opposite to each other. The first support block and the second support block are both fixed to the bottom plate. The linear cam passes through a gap between the first support block and the second support block.

5. The nest plate correction and positioning mechanism according to claim 4, characterized in that: It also includes a tension spring fixing shaft, which is arranged on the first supporting block, and one end of the tension spring is connected to the tension spring fixing shaft.

6. The nest plate correction and positioning mechanism according to claim 3, characterized in that: An inclined surface is provided on the upper surface of the linear cam, and the inclined surface cooperates with the roller of the pressing mechanism to convert the horizontal movement of the linear cam into the vertical movement of the pressing block.

7. The nest plate correction and positioning mechanism according to claim 1, characterized in that: It also includes a lateral roller, which is installed on the bottom plate and contacts the side surface of the linear cam when the linear cam moves.

8. The nest plate correction and positioning mechanism according to claim 1, characterized in that: It also includes: a vertical roller assembly, which includes a vertical roller groove fixed on the base plate and a vertical roller installed on the linear cam; the vertical roller rolls in the vertical roller groove to guide the horizontal movement of the linear cam.

9. The nest plate correction and positioning mechanism according to claim 1, characterized in that: It also includes reset components respectively arranged on both sides of the linear cam, and the reset components drive the linear cam to reset in the horizontal direction after the linear cam completes the pressing action.

10. The nest plate correction and positioning mechanism according to claim 9, characterized in that: The reset component comprises: A guide rod, the guide rod is fixedly arranged on the bottom plate; a return spring, wherein the return spring is sleeved on the guide rod; and A limit slider, one end of which is fixed on the linear cam and the other end is sleeved on the guide rod, and the return spring is compressed or restored as the linear cam moves.

11. The nest plate correction and positioning mechanism according to claim 1, characterized in that: The nest board positioning plate encloses a nest board placement area, and the nest board positioning plate is provided with a chamfer corresponding to the pressing block at the edge of the nest board placement area.

12. The nest plate correction and positioning mechanism according to claim 11, characterized in that: The nest plate placement area is provided with a plurality of through holes, and the arrangement of the through holes corresponds to the positions of the syringes on the nest plate.

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