CN219649741U - Clamping jig - Google Patents

Abstract

The utility model discloses a clamping jig, which belongs to the technical field of product assembly and comprises a carrier and a clamping assembly, wherein the carrier is provided with a product groove and a clamping hole which is arranged on the side wall of the carrier and is communicated with the product groove; the clamping assembly comprises a clamping block, a rotating shaft and an elastic piece, wherein the rotating shaft is arranged in the clamping hole, two ends of the rotating shaft are fixedly connected to the carrier, the middle of the clamping block is sleeved on the rotating shaft, the elastic piece is arranged between one end of the clamping block and the carrier, and the elastic piece elastically pushes against one end of the clamping block to enable the clamping block to rotate around the rotating shaft, so that the other end of the clamping block is abutted against a product in the product groove. The clamping jig provided by the utility model can effectively fix a product at an accurate position, and has higher positioning precision.

Description

Clamping jig

Technical Field

The utility model relates to the technical field of product assembly, in particular to a clamping jig.

Background

In the automatic assembly production process of the vehicle-mounted camera, in order to accurately ensure the assembly quality and efficiency of products, the vehicle-mounted camera is required to be positioned and clamped through the jig, so that the vehicle-mounted camera is fixed at an accurate position in a preset direction, that is, the clamping jig is required to be used for positioning the vehicle-mounted camera in the X direction or the Y direction.

In the prior art, the top surface of positioning jig is provided with the product groove, and the product groove can be arranged in to the vehicle-mounted camera, and the size in product groove cooperatees with the size in vehicle-mounted camera, and the shape in product groove cooperatees with the shape of vehicle-mounted camera to realize the location to vehicle-mounted camera in X to or Y to. However, with the repeated use of the positioning jig, the product groove is larger than the vehicle-mounted camera in size due to repeated friction between the product and the positioning jig, so that the vehicle-mounted camera cannot be effectively fixed at an accurate position, and the positioning accuracy is poor.

Therefore, a clamping jig with high positioning accuracy is needed.

Disclosure of Invention

The utility model aims to provide a clamping jig which can effectively fix a product at an accurate position and has higher positioning precision.

The technical scheme adopted by the utility model is as follows:

clamping jig includes:

the carrier is provided with a product groove and a clamping hole which is arranged on the side wall of the carrier and communicated with the product groove;

the clamping assembly comprises a clamping block, a rotating shaft and an elastic piece, wherein the rotating shaft is arranged in the clamping hole, two ends of the rotating shaft are fixedly connected to the carrier, the middle of the clamping block is sleeved on the rotating shaft, the elastic piece is arranged between one end of the clamping block and the carrier, and the elastic piece elastically pushes against one end of the clamping block to enable the clamping block to rotate around the rotating shaft, so that the other end of the clamping block is abutted against a product in the product groove.

Optionally, the device further comprises a base, the carrier is arranged on the base, the clamping assembly further comprises a limiting structure, the limiting structure is fixedly arranged on the base, the carrier is arranged on the base in a sliding mode along the Z direction, one end of the clamping block can extrude the elastic piece under the limiting of the limiting structure, and the other end of the clamping block is far away from the product to move.

Optionally, one end of the clamping block is provided with a pushing inclined plane, the limiting structure is provided with an arc contact surface, and the pushing inclined plane can be in contact with the arc contact surface.

Optionally, the lateral wall of carrier is equipped with the intercommunication the recess in clamping hole, the tank bottom of recess is equipped with the spacing groove, at least part the clamp block is arranged in the recess, the one end limit of elastic component is located in the spacing groove.

Optionally, one end of the clamping block is provided with a runway-shaped groove extending along the length direction of the clamping block, and the other end of the elastic piece is slidably arranged in the runway-shaped groove.

Optionally, the device further comprises a first reset piece, wherein the first reset piece extends along the Z direction and is arranged between the carrier and the base.

Optionally, the device further comprises a positioning component, wherein the positioning component is connected to the base in a sliding manner along a direction perpendicular to the Z direction, the movement of the positioning component can push the carrier to move in the Z direction, and one end of the positioning component can be abutted against the product in the Z direction.

Optionally, the positioning component has a pressing inclined plane, the clamping jig further includes a first cam follower, a first bolt of the first cam follower is fixed on the carrier, and a first roller of the first cam follower can contact with the pressing inclined plane.

Optionally, the clamping components are provided with two groups, and the two groups of clamping components are respectively installed on two adjacent side walls of the carrier.

Optionally, the carrier has a chamfer structure, and the chamfer structure is arranged at the notch of the product groove.

The utility model has the beneficial effects that:

according to the clamping jig provided by the utility model, the clamping holes communicated with the product groove are formed in the side wall of the carrier, the middle part of the clamping block is rotatably arranged on the carrier through the rotating shaft, the elastic piece is arranged between the bottom end of the clamping block and the outer wall of the carrier, and the elastic piece can push the clamping block to rotate around the rotating shaft, so that the top end of the clamping block is abutted against a product positioned in the product groove, the product is clamped in the horizontal direction through the mutual matching of the clamping block and the carrier, the positioning precision of the product is not influenced by the product groove, the product can be effectively fixed at an accurate position, and the positioning precision is higher.

Drawings

Fig. 1 is a schematic structural diagram of a clamping fixture according to an embodiment of the present utility model;

FIG. 2 is a reference diagram of a usage state of the clamping jig according to the embodiment of the utility model;

FIG. 3 is a top view of a clamping fixture according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view A-A of FIG. 3 in accordance with the present utility model;

fig. 5 is an exploded view of a clamping jig according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a stopper according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of a carrier according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a first embodiment of a clamping block;

FIG. 9 is a second schematic structural view of a clamping block according to an embodiment of the present utility model;

fig. 10 is a schematic structural view of a limiting structure according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a structure of a pushing rod according to an embodiment of the present utility model;

fig. 12 is a schematic view of a clamping fixture provided in an embodiment of the present utility model in an open state;

fig. 13 is a top view of the structure of fig. 12 provided in an embodiment of the present utility model.

In the figure:

1. a base; 2. a carrier; 21. a product tank; 22. a clamping hole; 23. a groove; 24. a limit groove; 25. a chamfering structure; 3. a clamping assembly; 31. a clamping block; 311. pushing the inclined plane; 312. a racetrack groove; 32. a rotating shaft; 33. an elastic member; 34. a limit structure; 341. an arc contact surface; 4. a first reset member; 5. a positioning assembly; 51. pressing the inclined plane; 52. a limiting block; 521. a bump; 53. a second reset member; 6. a first cam follower; 61. a first bolt; 62. a first roller; 7. a slide bar; 8. pushing the guide rod; 81. pushing the inclined plane; 9. a second cam follower; 100. vehicle-mounted camera.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a clamping jig for clamping a product, can effectively fix the product at an accurate position, and has higher positioning accuracy. An example of a product in this embodiment is the in-vehicle camera 100.

As shown in fig. 1 and 2, the clamping jig includes a base 1, a carrier 2, and a clamping assembly 3.

Wherein the base 1 is in a cuboid shape. The carrier 2 is disposed on the base 1, and the carrier 2 has a product slot 21 and a clamping hole 22 disposed on a side wall of the carrier 2 and communicated with the product slot 21, wherein the product slot 21 is used for Rong Zhichan products, and a size of the product slot 21 is slightly larger than a size of the product, so that the product can be smoothly placed in the product slot 21.

As shown in fig. 3 and 4, the clamping assembly 3 includes a clamping block 31, a rotating shaft 32 and an elastic member 33, wherein the rotating shaft 32 is disposed in the clamping hole 22, and two ends of the rotating shaft 32 are fixedly connected to the carrier 2, and in this embodiment, an extending direction of the rotating shaft 32 is parallel to a length direction or a width direction of the carrier 2. The middle part cover of clamp piece 31 is located on pivot 32, and clamp piece 31 can regard pivot 32 as the center of rotation to rotate. The elastic member 33 is disposed between one end of the clamping block 31 and the carrier 2, in this embodiment, the elastic member 33 is disposed between the bottom end of the clamping block 31 and the carrier 2, and the top end of the clamping block 31 can extend into the product slot 21 to contact with the product, i.e. the top end of the clamping block 31 can pass through the clamping hole 22. Specifically, the elastic member 33 can elastically push against one end of the clamping block 31 to rotate the clamping block 31 around the rotation shaft 32, so that the other end of the clamping block 31 abuts against the side wall of the product located in the product groove 21, and the clamping block 31 and the carrier 2 cooperate to clamp the product.

The clamping jig that this embodiment provided, the lateral wall of carrier 2 is equipped with the clamping hole 22 of intercommunication product groove 21, the middle part of clamp piece 31 is installed on carrier 2 through pivot 32 rotation, and be equipped with elastic component 33 between the outer wall of the bottom of clamp piece 31 and carrier 2, elastic component 33 can push up clamp piece 31 and revolute pivot 32 rotation, make the top of clamp piece 31 support tightly the product that is arranged in product groove 21, and then press from both sides the tight product in the horizontal direction through clamp piece 31 and carrier 2 mutually support, the positioning accuracy of product does not receive the influence of product groove, and can fix the product in an accurate position effectively, have higher positioning accuracy.

It should be noted that the clamping assembly 3 may be provided with a set of clamping assemblies 3, and the set of clamping assemblies 3 may be located on the side wall of the carrier 2 in the X direction or the side wall of the carrier in the Y direction, and the clamping blocks 31 elastically abut against the product to accurately position the product in the X direction and the Y direction. Optionally, in order to further improve positioning accuracy, the clamping component 3 is provided with at least two groups, when the clamping component 3 is provided with two groups, the two groups of clamping components 3 are respectively installed on two adjacent side walls of the carrier 2, and the two side walls are respectively an X-direction side wall and a Y-direction side wall, so that one group of clamping components 3 and the carrier 2 are mutually matched to clamp a product in the X direction, and the other group of clamping components 3 and the carrier 2 are mutually matched to clamp the product in the Y direction, thereby realizing clamping and positioning of the product in the horizontal direction. It will be appreciated that the two side walls may also be side walls between the X-direction and the Y-direction, and that clamping and positioning of the product in the horizontal direction can also be achieved, which is not limited in this embodiment. In this embodiment, in order to further improve the clamping effect, the clamping block 31 may contact with the product through a silica gel pad or a rubber pad, so that on one hand, accidental injury to the product can be prevented, and on the other hand, friction between the clamping block 31 and the product can be increased, so that the product is not easy to move relative to the clamping block 31.

Optionally, as shown in fig. 3 and 4, the clamping assembly 3 further includes a limiting structure 34, where the limiting structure 34 is fixedly disposed on the base 1, and the carrier 2 is slidably disposed on the base 1 along the Z direction, that is, the carrier 2 can move relative to the base 1 under the action of external force. When the carrier 2 moves, the clamping block 31 is driven to move close to the base 1, and one end of the clamping block 31 can be contacted with the limiting structure 34 in the process of moving along with the carrier 2 close to the base 1, and the elastic piece 33 is extruded under the limit or blocking of the limiting structure 34, so that the other end of the clamping block 31 moves away from the product, and the product in the product groove 21 is loosened.

Further, as shown in fig. 8, one end of the clamping block 31 has a pushing inclined surface 311, and the pushing inclined surface 311 is disposed toward the limit structure 34 and is used for contacting with the limit structure 34. In some embodiments, as shown in fig. 10, the limiting structure 34 has an arc contact surface 341 disposed opposite to the pushing inclined surface 311, where the arc contact surface 341 is a convex surface, and the pushing inclined surface 311 can contact with the arc contact surface 341. One end of the clamping block 31 can conveniently extend into the space between the limiting structure 34 and the carrier 2 through the pushing inclined plane 311, so that the clamping stagnation is avoided, and the pushing inclined plane 311 also plays a guiding role. It should be noted that, the limiting structure 34 may press the elastic member 33 by pushing the inclined surface 311, or the limiting structure 34 may press the elastic member 33 by other surfaces of the clamping block 31, which is not limited in this embodiment. By arranging the arc contact surface 341, the contact area between the clamping block 31 and the limiting structure 34 is reduced, so that the friction force between the clamping block and the limiting structure is reduced, and the friction loss is reduced. Referring to fig. 7, the outer side wall of the carrier 2 is provided with a groove 23 communicating with the clamping hole 22, the groove 23 is open at two ends, and the bottom of the groove 23 is provided with a limit groove 24, at least a portion of the clamping block 31 is disposed in the groove 23, so that the clamping block 31 can take the groove 23 as a part of the movable space, so that the clamping block 31 can occupy a smaller space. And, one end of the elastic member 33 is limited in the limiting groove 24, so as to prevent the elastic member 33 from being separated from the space between the clamping block 31 and the carrier 2. In this embodiment, the elastic member 33 is a spring.

Further, as shown in fig. 9, one end of the clamping block 31 is provided with a track-shaped groove 312 extending along the length direction of the clamping block 31, and the other end of the elastic member 33 is slidably disposed in the track-shaped groove 312, so that when the clamping block 31 rotates, the other end of the elastic member 33 can move in the track-shaped groove 312 by arranging the track-shaped groove 312, and the probability that the elastic member 33 is separated from the clamping block 31 is reduced by the limitation of the track-shaped groove 312, thereby improving the reliability of the clamping jig.

Optionally, as shown in fig. 4, the clamping fixture further includes a first reset element 4, where the first reset element 4 extends along the Z direction and is disposed between the carrier 2 and the base 1, and the first reset element 4 is used for resetting the carrier 2. Specifically, the carrier 2 moves along the Z-direction in the negative direction under the action of the external force, and extrudes the first reset member 4, and after the external force applied to the carrier 2 disappears, the carrier 2 moves along the Z-direction in the positive direction under the action of the first reset member 4 until the product or the carrier 2 is limited by other structures.

In this embodiment, the clamping fixture further includes a positioning assembly 5, where the positioning assembly 5 is slidably connected to the base 1 along a direction perpendicular to the Z-direction, and in some embodiments, the positioning assembly 5 is slidably connected to the base 1 along the X-direction, and in other embodiments, the positioning assembly 5 is slidably connected to the base 1 along the Y-direction. The base 1 constrains the positioning assembly 5 in the Z direction so that the positioning assembly 5 does not displace in the Z direction. In addition, the positioning assembly 5 can push the carrier 2 to move in the Z direction when moving in the direction perpendicular to the Z direction, so that the carrier 2 and the positioning assembly 5 are linked. And, the one end of locating component 5 can support the product that lies in product groove 21 in the Z direction tightly, and then mutually support in Z direction clamp product with carrier 2, has realized the location and the clamp of product in the space. In this embodiment, the product has two top surfaces of different heights, and one end of the positioning assembly 5 can be in contact with the lower top surface. In some embodiments, as shown in fig. 6, one end of the positioning component 5 is provided with a bump 521, and the bump 521 is used for abutting against a product.

Further, as shown in fig. 6, the positioning assembly 5 has a pressing inclined surface 51, the clamping fixture further includes a first cam follower 6, a first bolt 61 of the first cam follower 6 is fixed on the carrier 2, a first roller 62 of the first cam follower 6 can contact with the pressing inclined surface 51, and the positioning assembly 5 pushes the carrier 2 to move in the Z direction through the pressing inclined surface 51 and the first cam follower 6.

It should be noted that, the positioning assemblies 5 are provided with two groups, the two groups of positioning assemblies 5 are oppositely arranged along the X-direction or the Y-direction, and the protruding blocks 521 of the two groups of positioning assemblies 5 are used for abutting against different positions of the top surface of the product, so as to stably drive the carrier 2 to move along the Z-direction.

Optionally, as shown in fig. 5, the positioning assembly 5 includes a limiting block 52 and a second reset member 53, where the pressing inclined surface 51 is disposed on the limiting block 52, an extending direction of the second reset member 53 is parallel to an arrangement direction of the two positioning assemblies 5, and one end of the second reset member 53 is limited on the limiting block 52, and the other end is limited and connected with the base 1. For example, the two positioning assemblies 5 are oppositely arranged along the Y direction, when the limiting block 52 moves away from the axis of the product groove 21 under the action of external force, the carrier 2 can be extruded to move along the Z direction in a negative direction, the second reset piece 53 is extruded at the same time, and after the external force disappears, the limiting block 52 moves close to the product under the action of the second reset piece 53.

Further, as shown in fig. 5, the clamping fixture further includes a slide bar 7, a push rod 8 and a second cam follower 9, wherein the slide bar 7 is slidably connected to the base 1, and the sliding direction of the slide bar 7 is perpendicular to the sliding direction of the limiting block 52, in this embodiment, the limiting block 52 slides along the Y direction, and the slide bar 7 slides along the X direction. One end of the push rod 8 is fixedly connected to the slide rod 7, so that the slide rod 7 pushes the push rod 8 to move in the X direction, as shown in fig. 10, one end of the push rod 8 away from the slide rod 7 is provided with a push inclined plane 81, a roller of the second cam follower 9 can be contacted with the push inclined plane 81, a bolt of the second cam follower 9 is fixedly connected to the limiting block 52, and the push rod 8 can push the limiting block 52 to move in the Y direction through the push inclined plane 81 and the second cam follower 9 in the X direction, so that the actuation of one power source in the three directions of X, Y, Z is realized. The power source required by the clamping jig can be less, the occupied space is smaller, the small-sized positioning device is facilitated, and the cost is lower.

Alternatively, as shown in fig. 12-13, the carrier 2 has a chamfer structure 25, the chamfer structure 25 being provided in a notch of the product tank 21, the chamfer structure 25 being provided to facilitate placement of the product into the product tank 21. In this embodiment, the chamfer structure 25 is disposed around the product tank 21.

When the clamping jig provided by the embodiment is used, the sliding rod 7 can be driven to move forward along the X direction by the driving piece or other driving structures, and the pushing rod 8 is driven to move forward along the X direction in the moving process of the sliding rod 7. During the movement of the push rod 8, the push inclined surface 81 contacts with the second cam follower 9, and the roller of the second cam follower 9 rolls on the push inclined surface 81, the push rod 8 pushes the two limiting blocks 52 to move away from each other, so that the protruding block 521 moves away from the product groove 21 of the carrier 2 and gets away from the upper side of the product groove 21. And, the two stoppers 52 respectively press the second restoring member 53. In the process of moving the limiting block 52 along the Y direction, the first cam follower 6 is pushed to move along the negative Z direction by pressing the inclined plane 51, and then the carrier 2 is driven to move along the negative Z direction. In the moving process of the carrier 2, the clamping block 31 is driven to move downwards through the rotating shaft 32 until the bottom end of the clamping block 31 is in contact with the limiting structure 34, the carrier 2 continues to move downwards, the clamping block 31 rotates around the rotating shaft 32 under the limit of the limiting structure 34, the top end of the clamping block 31 moves outwards of the product groove 21, the bottom end of the clamping block 31 presses the elastic piece 33, and the elastic piece 33 is compressed, so that the clamping assembly 3 is in an open state. At the same time, the first restoring member 4 is pressed.

Next, the product is placed in the product tank 21, and the positioning jig after the placement of the product is shown in fig. 2. After that, the external force to the slide bar 7 is removed, the deducing bar 8 can move along the X direction in the negative direction under the action of the reset piece structure and drive the slide bar 7 to move, the thrust acting on the limiting blocks 52 disappears, and under the action of the second reset piece 53, the two limiting blocks 52 are mutually close in the Y direction and the convex block 521 is enabled to move to the upper part of the product groove 21. Under the action of the first resetting piece 4, the carrier 2 moves forward along the Z direction, namely, the carrier 2 moves upwards, in the process of moving upwards the carrier 2, the clamping block 31 is driven to move upwards through the rotating shaft 32, and after the clamping block 31 is separated from the limiting structure 34, under the action of the elastic piece 33, the top end of the clamping block 31 stretches into the product groove 21 and clamps the product, in particular, the product is clamped in both the X direction and the Y direction. After the clamping block 31 clamps the product, the carrier 2 continues to rise until the bump 521 abuts against a top surface of the product, so as to achieve the limit clamping of the product in the Z direction.

The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. Clamping jig, its characterized in that includes:

the carrier (2), the carrier (2) is provided with a product groove (21) and a clamping hole (22) which is arranged on the side wall of the carrier (2) and is communicated with the product groove (21);

clamping assembly (3), including clamp block (31), pivot (32) and elastic component (33), pivot (32) set up in clamp hole (22) and both ends rigid coupling in carrier (2), the middle part cover of clamp block (31) is located on pivot (32), elastic component (33) are located clamp block (31) one end reaches between carrier (2), elastic component (33) elasticity pushes against clamp block (31) one end makes clamp block (31) rotate around pivot (32), so that clamp block (31) other end pushes against and is located product in product groove (21).

2. The clamping jig according to claim 1, further comprising a base (1), the carrier (2) is disposed on the base (1), the clamping assembly (3) further comprises a limiting structure (34), the limiting structure (34) is fixedly disposed on the base (1), the carrier (2) is slidably disposed on the base (1) along the Z direction, and one end of the clamping block (31) can press the elastic member (33) under the limit of the limiting structure (34), so that the other end of the clamping block (31) is far away from the product.

3. Clamping jig according to claim 2, characterized in that one end of the clamping block (31) has a push-against inclined surface (311), the limit structure (34) has an arc contact surface (341), the push-against inclined surface (311) being contactable with the arc contact surface (341).

4. Clamping jig according to claim 2, characterized in that the outer side wall of the carrier (2) is provided with a groove (23) communicating with the clamping hole (22), the groove bottom of the groove (23) is provided with a limit groove (24), at least part of the clamping block (31) is arranged in the groove (23), and one end of the elastic piece (33) is limited in the limit groove (24).

5. The clamping jig according to claim 4, wherein one end of the clamping block (31) is provided with a race track-type groove (312) extending in a length direction of the clamping block (31), and the other end of the elastic member (33) is slidably disposed in the race track-type groove (312).

6. Clamping jig according to any one of claims 2-5, further comprising a first return element (4), said first return element (4) extending in Z-direction and being arranged between the carrier (2) and the base (1).

7. The clamping jig according to claim 6, further comprising a positioning assembly (5), wherein the positioning assembly (5) is slidably connected to the base (1) along a direction perpendicular to the Z direction, and wherein movement of the positioning assembly (5) can push the carrier (2) to move in the Z direction, and wherein one end of the positioning assembly (5) can abut against the product in the Z direction.

8. Clamping jig according to claim 7, characterized in that the positioning assembly (5) has a pressing ramp (51), the clamping jig further comprising a first cam follower (6), a first bolt (61) of the first cam follower (6) being fixed on the carrier (2), a first roller (62) of the first cam follower (6) being contactable with the pressing ramp (51).

9. Clamping jig according to any one of claims 1-5, wherein two groups of clamping assemblies (3) are provided, the two groups of clamping assemblies (3) being mounted on two adjacent side walls of the carrier (2) respectively.

10. Clamping jig according to any one of claims 1-5, characterized in that the carrier (2) has a chamfer structure (25), the chamfer structure (25) being provided in the notch of the product tank (21).