Clamping jaw assembly and limiting clamp

Abstract

The utility model discloses a clamping jaw assembly and a limiting clamp. Wherein the clamping jaw assembly comprises a clamping jaw, an elastic piece and a connecting rod, the clamping jaw is provided with an installation end and a clamping end, one end of the elastic piece abuts against the installation end, the clamping jaw is installed on the connecting rod, and the end, away from the clamping jaw, of the elastic piece abuts against the connecting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping jaws, in particular to a clamping jaw assembly and a limiting clamp. Background Art

[0002] The cuvette carrier is usually placed on a conveyor belt to drive the cuvette to a predetermined position. Since the conveyor belt does not stop, a clamping jaw assembly needs to be provided at the predetermined position to enable the cuvette carrier to be at the predetermined position. The clamping jaw assembly intercepts the cuvette carrier and makes it stay at the predetermined position. Currently, most of the clamping jaw assemblies are driven by a driving device, and in order to ensure the clamping of the cuvette carrier, the driving device will continue to provide clamping force to the clamping jaw assembly, which will cause the driving device to continuously receive a reaction force from the clamping jaw assembly, thereby reducing the service life of the driving device. Utility Model Content

[0003] The main purpose of the utility model is to provide a clamping jaw assembly, aiming to increase the service life of a driving device.

[0004] In order to achieve the above-mentioned purpose, the clamping jaw assembly proposed by the utility model comprises:

[0005] a clamping jaw having a mounting end and a clamping end;

[0006] an elastic member, one end of which abuts against the mounting end;

[0007] A connecting rod, the clamping claw is installed on the connecting rod, and one end of the elastic member away from the clamping claw abuts against the connecting rod.

[0008] In one embodiment of the utility model, a limit block is provided on the connecting rod, and the limit block is provided with a cavity that can accommodate the mounting end of the clamping jaw. The elastic member is located in the cavity, and its end away from the clamping jaw abuts against the limit block.

[0009] In an embodiment of the utility model, the clamping jaw is provided with a through hole, the cavity of the limit block is installed with a guide member, the elastic member is sleeved on the guide member, and the guide member is at least partially inserted into the through hole.

[0010] In one embodiment of the utility model, a connecting hole is provided at one end of the limit block away from the cavity, the connecting hole is connected to the cavity, the connecting hole is used to install the guide member, the guide member is inserted from the end of the connecting hole away from the cavity, passes through the cavity, and is inserted into the through hole of the clamp.

[0011] In an embodiment of the utility model, the clamping jaw is provided with a protrusion, and the protrusion is provided at the mounting end. When the elastic member is compressed, the protrusion abuts against the bottom of the cavity to avoid excessive compression of the elastic member.

[0012] In an embodiment of the present invention, a contoured groove is provided on the end surface of the clamping end.

[0013] In an embodiment of the utility model, the clamping jaw is provided with an intercepting portion, which is arranged on one side of the profiling groove and protrudes in the direction of the notch of the profiling groove.

[0014] In an embodiment of the present invention, the contoured groove and the intercepting portion are spaced apart to form an avoidance position.

[0015] In an embodiment of the present invention, the clamping jaw further comprises a guiding inclined surface, and the guiding inclined surface is formed at a through position of the contoured groove on the bottom surface of the clamping end.

[0016] The utility model also provides a limiting clamp, comprising:

[0017] Two oppositely disposed jaw assemblies, wherein at least one of the jaw assemblies is a jaw assembly as described in any one of the above items;

[0018] The jaw assembly includes:

[0019] a clamping jaw having a mounting end and a clamping end;

[0020] an elastic member, one end of which abuts against the mounting end;

[0021] A connecting rod, the clamping claw is installed on the connecting rod, and one end of the elastic member away from the clamping claw abuts against the connecting rod.

[0022] The technical solution of the utility model is to set an elastic member, a clamping jaw, and a connecting rod in the clamping jaw assembly, the clamping jaw is connected to the connecting rod, and the elastic member is located between the clamping jaw and the connecting rod, with one end abutting the clamping jaw and the other end abutting the connecting rod. In this way, when the driving device drives the connecting rod to send the clamping jaw to the clamping position to realize the clamping function, part of the reaction force of the clamping jaw on the driving device will be absorbed by the elastic member, and the elastic member will stably transmit the reaction force to the driving device, so that the reaction force received by the driving device is reduced and the source of the reaction force is more stable, thereby improving the service life of the driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of the clamping jaw assembly of the utility model;

[0025] Figure 2 It is a structural explosion diagram of an embodiment of the clamping jaw assembly of the utility model;

[0026] Figure 3 It is a front view of the clamping jaw structure of one embodiment of the clamping jaw assembly of the utility model;

[0027] Figure 4 This is a schematic diagram of the clamping structure of an embodiment of the clamping assembly of the utility model;

[0028] Figure 5 This is a front view of the limit block structure of an embodiment of the clamping jaw assembly of the utility model.

[0029] Description of Figure Numbers:

[0030] Label name Label name 100 Gripper assembly 124 Guide slope 10 Gripper 13 Through Hole 11 Installation side 20 Elastic parts 111 Raised 30 Connecting rod 12 Clamping end 31 Limit block 121 Profile slot 311 Cavity 122 Interception Department 312 Guide 123 Avoidance 313 Connection hole

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] The utility model provides a clamping jaw assembly 100, aiming to increase the service life of a driving device.

[0036] In the embodiment of the present utility model, in combination with reference to Figures 1 to 4 The clamping jaw assembly 100 includes a clamping jaw 10, an elastic member 20 and a connecting rod 30. The clamping jaw 10 has a mounting end 11 and a clamping end 12. One end of the elastic member 20 abuts against the mounting end 11. The clamping jaw 10 is installed on the connecting rod 30. The end of the elastic member 20 away from the clamping jaw 10 abuts against the connecting rod 30.

[0037] It is understandable that the jaw assembly 100 needs to be driven by a driving device. The driving device is connected to the connecting rod 30. The driving device drives the connecting rod 30 to move back and forth. The connecting rod 30 drives the jaw 10 to move back and forth. When the jaw 10 abuts against the reaction cup carrier and starts to clamp, the reaction cup carrier will apply a clamping reaction force to the jaw 10. The reaction force will be transmitted along the jaw 10 through the connecting rod 30 to the core component of the driving device. Over time, it will damage the core of the driving device and reduce the service life of the driving device.

[0038] In this configuration, an elastic member 20 is provided between the clamping jaw 10 and the connecting rod 30, the elastic member 20 abuts against the mounting end 11 of the clamping jaw 10, and the other end of the elastic member 20 abuts against the connecting rod 30. When the clamping jaw 10 is subjected to the reaction force exerted by the reaction cup carrier, the reaction force will be partially absorbed by the elastic member 20, and then transmitted to the connecting rod 30 through the elastic member 20 and finally reaches the driving device, thereby reducing the reaction force received by the driving device, and the elastic member 20 can also play a buffering role, converting the reaction force with sudden changes into a slowly changing force, further reducing the damage to the driving device and increasing the service life of the driving device.

[0039] In some embodiments, in order to reduce the manufacturing cost of the clamp assembly 100, the elastic member 20 uses a relatively inexpensive sponge pad, which is clamped between the clamp 10 and the connecting rod 30 through the sponge pad, and its position is fixed by pasting the mounting end 11 of the clamp and the connecting rod 30. When the clamp 10 is subjected to the reaction force of the reaction cup carrier, the sponge pad undergoes elastic deformation to absorb the reaction force.

[0040] In other embodiments, the elastic member 20 adopts an air spring. The air spring is filled with compressed air in a sealed container and realizes its elastic effect by using the compressibility of gas. The air spring has ideal nonlinear elastic characteristics and has better stability after being compressed. This stability can help the clamp 10 to better clamp and fix the reaction cup carrier, and avoid unstable clamping due to the elastic force of the elastic member 20 being released in all directions after being compressed.

[0041] In some other embodiments, in order to reduce the parts cost of the elastic member 20 while ensuring that it has good elasticity, the elastic member 20 is a common spring, one end of which abuts against the mounting end 11 of the clamp 10, and the other end abuts against the connecting rod 30, thereby absorbing the reaction force.

[0042] Further, see Figures 1 to 4 In one embodiment, a limit block 31 is provided on the connecting rod 30, and the limit block 31 has a cavity 311 that can accommodate the mounting end 11 of the clamping jaw 10. The elastic member 20 is located in the cavity 311, and its end away from the clamping jaw 10 abuts against the limit block 31.

[0043] In this way, by setting a limit block 31 on the connecting rod 30, the limit block 31 has a cavity 311 that can accommodate the mounting end 11 of the clamp 10, and the clamp 10 is installed in the cavity 311. At the same time, the elastic member 20 is also set in the cavity 311, and one end of the elastic member 20 abuts against the clamp 10, and the other end abuts against the bottom of the cavity 311, so that the clamp 10 can only move in the horizontal direction under the limitation of the limit block 31, thereby avoiding the situation where the clamp 10 has no structural limitation when it is subjected to a reaction force, causing it to flip over, and then causing unstable clamping.

[0044] In some embodiments, in order to enable the jaw 10 to better move forward and backward in the cavity 311 of the limit block 31, the inner wall size of the cavity 311 is slightly larger than the outer side size of the mounting end 11 of the jaw 10, so that the jaw 10 and the cavity 311 of the limit block 31 are gap-matched. In this way, the jaw 10 will not be stuck by the limit block 31, resulting in the jaw 10 being unable to compress the elastic member 20 and the elastic member 20 being unable to absorb the reaction force. At the same time, since the inner wall size of the cavity 311 is only slightly larger than the jaw 10, the limit member can also effectively limit the movement of the jaw 10.

[0045] Further, see Figures 1 to 4 In one embodiment, the clamping jaw 10 is provided with a through hole 13, the cavity 311 of the limiting block 31 is provided with a guide member 312, the elastic member 20 is sleeved on the guide member 312, and the guide member 312 is at least partially inserted into the through hole 13.

[0046] In this arrangement, a guide member 312 is provided in the cavity 311 of the limit block 31, a through hole 13 is provided on the clamping jaw 10, and the elastic member 20 is sleeved on the guide member 312. At the same time, the guide member 312 cooperates with the through hole 13, so that the deformation direction of the elastic member 20 can be guided by the guide member 312. At the same time, the clamping jaw 10 cooperates with the guide member 312 through the through hole 13, which is equivalent to the clamping jaw 10 being "suspended" by the guide member 312. Since the clamping jaw 10 is in clearance with the limit block 31, the clamping jaw 10 no longer contacts the cavity 311 of the limit block 31, so that the clamping jaw 10 can compress the elastic member 20 more easily, thereby improving the effect of the elastic member 20 absorbing the reaction force in two aspects.

[0047] In some embodiments, in order to make the structure of the jaw assembly 100 simple and the manufacturing cost lower, the elastic member 20 is a spring, the guide member 312 is a long rod, the length of the long rod is greater than the natural length of the spring, the spring is sleeved on the long rod, and the front end of the long rod cooperates with the through hole 13 of the jaw 10, so that the long rod guides the jaw 10 to compress the spring.

[0048] Further, see Figure 2 , Figure 5 In one embodiment, a connecting hole 313 is provided at one end of the limit block 31 away from the cavity 311. The connecting hole 313 is connected to the cavity 311. The connecting hole 313 is used to install a guide member 312. The guide member 312 is inserted from the end of the connecting hole 313 away from the cavity 311, passes through the cavity 311, and is inserted into the through hole 13 of the clamp 10.

[0049] In this arrangement, the guide member 312 is not directly formed on the limit block 31, but is an independent part. The guide member 312 is inserted through the connecting hole 313 of the limit block 31 at the end away from the cavity 311, and cooperates with the through hole 13 of the clamping jaw 10 through the cavity 311, so that the guide member 312 becomes a detachable part, avoiding the need to replace the entire limit block 31 due to damage of the guide member 312, simplifying the molding difficulty of the limit block 31, and reducing the manufacturing and maintenance costs.

[0050] In some embodiments, the connecting hole 313 has an internal thread and the guide member 312 has an external thread. The guide member 312 is threadedly connected to the limit block 31 to adjust the depth of the guide member 312 on the through hole 13 of the clamp 10 to avoid the guide member 312 being too long, causing the front end of the guide member 312 to protrude from the clamping end 12 of the clamp 10, affecting the clamping effect of the clamp 10.

[0051] In other embodiments, the connecting hole 313 has a limiting surface, and the rear end of the guide member 312 has a structure similar to a "nail head", and the depth of the "nail head" is limited by the limiting surface to limit the depth of the guide member 312. In this way, the forming of the connecting hole 313 and the guide member 312 is simpler, and the limiting structure is more durable and less prone to damage.

[0052] Further, see Figures 1 to 5 In one embodiment, the clamping jaw 10 is provided with a protrusion 111, and the protrusion 111 is provided at the mounting end 11. When the elastic member 20 is compressed, the protrusion 111 abuts against the bottom of the cavity 311 to prevent the elastic member 20 from being over-compressed.

[0053] In this way, a protrusion 111 is provided at the mounting end 11 of the clamp 10, and the protrusion 111 can abut against the limit block 31. When the protrusion 111 abuts against the limit block 31, the elastic member 20 will no longer be compressed, thereby limiting the maximum compression distance of the elastic member 20, avoiding the elastic member 20 from being over-compressed, and preventing its elastic potential energy from being too large, and the elastic force on the clamp 10 and the connecting rod 30 from being too large when the elastic potential energy is released.

[0054] In some embodiments, in order to make the jaw 10 more stable when it abuts against the limit block 31 when it stops compressing the elastic member 20, two protrusions 111 are provided, and the two protrusions 111 are arranged at intervals and are respectively arranged on the two side edges of the mounting end 11 of the jaw 10. In this way, when the protrusion 111 abuts against the limit block 31, the two spaced protrusions 111 abut at the same time to form a balanced force structure, thereby avoiding the situation where there is only one protrusion 111 and the abutment of one protrusion 111 with the limit block 31 will cause the protrusion 111 to tip over and tilt.

[0055] Further, see Figures 1 to 4 In one embodiment, a contoured groove 121 is provided on the end surface of the clamping end 12 .

[0056] In this way, a contoured groove 121 is provided on the end surface of the clamping end 12 , and the contoured groove 121 matches the outer shape of the clamping portion of the cuvette carrier, so that the clamping jaw 10 can clamp the cuvette carrier more stably.

[0057] In some embodiments, the contoured groove 121 is an arc-shaped groove, which matches the arc shape of the clamping part of the reaction cup carrier. Since the force direction of each point on the arc points to its center, when the arc groove abuts against the reaction cup carrier, the reaction cup carrier can be stabilized in this position to prevent the reaction cup carrier from shaking left and right. At the same time, when the arc groove abuts against the arc surface, the arc can also play a certain guiding role, so that the clamping jaw 10 can automatically center the reaction cup carrier.

[0058] In other embodiments, the contoured groove 121 is a "V"-shaped arc groove, and the "V"-shaped arc groove includes an arc segment and a straight line segment. The arc segment is located at the center of the "V"-shaped arc groove, and the straight line segment is provided with two segments, which are respectively connected to the two end points of the arc segment. Compared with the arc groove, the two sides of the "V"-shaped arc groove are not arcs, but extended straight lines. In this way, when the "V"-shaped arc groove abuts against the reaction cup carrier, its straight line segment will not abut against the reaction cup carrier, thereby avoiding the liquid on the reaction cup carrier from dripping into the abutting gap between the clamping jaw 10 and the reaction cup carrier, making it difficult to separate.

[0059] Further, see Figures 1 to 4 In one embodiment, the clamping jaw 10 is provided with an intercepting portion 122 , which is disposed on one side of the profiling groove 121 and protrudes in the direction of the notch of the profiling groove 121 .

[0060] In this way, the intercepting portion 122 is provided on the clamping jaw 10, and the intercepting portion 122 is protruded in the direction of the notch of the profiling groove 121, so that the clamping jaw 10 can intercept the cuvette carrier before clamping the cuvette carrier, and then clamp it, so that the clamping accuracy of the clamping jaw 10 is more accurate.

[0061] In some embodiments, two intercepting parts 122 can be provided, and the two intercepting parts 122 are respectively provided on both sides of the contoured groove 121. The first intercepting part 122 first intercepts a cuvette carrier, and the second intercepting part 122 intercepts a relatively lagging adjacent cuvette carrier, so that the adjacent cuvette carriers will not be too close, giving the clamping jaw assembly 100 time to push out the clamping.

[0062] Further, see Figures 1 to 4 In one embodiment, the contoured groove 121 and the intercepting portion 122 are spaced apart to form an avoidance position 123 .

[0063] In this way, the profiling groove 121 and the intercepting portion 122 are spaced apart and a relief position 123 is formed therebetween, so that when the intercepting portion 122 intercepts the cuvette carrier, a spacing space can be provided for the profiling groove 121 to clamp the cuvette carrier, thereby preventing the intercepting portion 122 and the profiling groove 121 from being too close to each other and affecting the clamping of the clamp 10.

[0064] In some embodiments, the avoidance position 123 can be in the shape of a groove, so that the interval between the profiling groove 121 and the intercepting portion 122 is more obvious. The shape of the groove can also prevent the deformation of the intercepting portion 122 caused by interception from affecting the shape of the profiling groove 121, thereby avoiding the deformation from affecting the clamping effect of the profiling groove 121.

[0065] Further, see Figures 1 to 4In one embodiment, the clamping jaw 10 further includes a guide slope 124 , which is formed at a through position of the contoured groove 121 on the bottom surface of the clamping end 12 .

[0066] In this configuration, the guide slope 124 is formed at the through position of the contoured groove 121 on the bottom surface of the clamping end 12. The guide slope 124 can guide the clamping jaw 10 to clamp the cuvette carrier to a clamping position, thereby preventing the clamping jaw 10 from shaking in height due to the shaking of the connecting rod 30 when the clamping jaw 10 moves back and forth, resulting in the clamping jaw 10 being unable to clamp the cuvette carrier at the clamping position.

[0067] In some embodiments, in order to ensure that the guiding bevel 124 can guide the height position of the clamp 10 even when the clamp is not centered on the cuvette carrier, the guiding bevel 124 is arranged along the lower edge of the contoured groove 121, so that as long as a certain point on the contoured groove 121 abuts against the cuvette carrier, the guiding bevel 124 can play a guiding role.

[0068] The utility model also provides a position limiting clamp, which has two clamping jaw assemblies 100 arranged opposite to each other. The specific structure of the clamping jaw assembly 100 refers to the above embodiments. Since the position limiting clamp adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, at least one clamping jaw assembly 100 is the clamping jaw assembly 100 as any one of the above items.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A clamping jaw assembly, characterized in that: include: a clamping jaw having a mounting end and a clamping end; an elastic member, one end of which abuts against the mounting end; A connecting rod, the clamping claw is installed on the connecting rod, and one end of the elastic member away from the clamping claw abuts against the connecting rod.

2. The clamping jaw assembly according to claim 1, characterized in that: The connecting rod is provided with a limit block, and the limit block is provided with a cavity which can accommodate the mounting end of the clamping jaw. The elastic member is located in the cavity, and one end of the elastic member away from the clamping jaw abuts against the limit block.

3. The clamping jaw assembly according to claim 2, characterized in that: The clamping jaw is provided with a through hole, the cavity of the limit block is provided with a guide piece, the elastic piece is sleeved on the guide piece, and the guide piece is at least partially inserted into the through hole.

4. The clamping jaw assembly according to claim 3, characterized in that: A connecting hole is provided at one end of the limit block away from the cavity, the connecting hole is connected to the cavity, the connecting hole is used to install the guide member, the guide member is inserted from the end of the connecting hole away from the cavity, passes through the cavity, and is inserted into the through hole of the clamp.

5. The clamping jaw assembly according to claim 2, characterized in that: The clamping claw is provided with a protrusion, and the protrusion is arranged at the mounting end. When the elastic member is compressed, the protrusion abuts against the bottom of the cavity to avoid excessive compression of the elastic member.

6. The clamping jaw assembly according to claim 1, characterized in that: The end surface of the clamping end is provided with a contoured groove.

7. The clamping jaw assembly according to claim 6, characterized in that: The clamping jaw is provided with an intercepting portion, which is arranged on one side of the profiling groove and protrudes in the direction of the notch of the profiling groove.

8. The clamping jaw assembly according to claim 7, characterized in that: The contoured groove and the intercepting portion are arranged at intervals to form an avoidance position.

9. The clamping jaw assembly according to claim 6, characterized in that: The clamping jaw further comprises a guiding inclined surface, and the guiding inclined surface is formed at a through position of the contoured groove on the bottom surface of the clamping end.

10. A limit clamp, characterized in that: The invention comprises two oppositely arranged jaw assemblies, wherein at least one of the jaw assemblies is the jaw assembly according to any one of claims 1 to 9.

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