CN111230449A

CN111230449A - Pressing mechanism

Info

Publication number: CN111230449A
Application number: CN202010106683.4A
Authority: CN
Inventors: 王耀光
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2020-02-21
Filing date: 2020-02-21
Publication date: 2020-06-05

Abstract

The invention discloses a pressing mechanism, which relates to the technical field of pressing machinery, and comprises a carrier table and a pressing driving device, wherein a piece to be pressed is placed on the carrier table and can be driven to reciprocate along a first direction; and the pressing driving devices are multiple, each pressing driving device comprises at least one pressing head, a pressing component and a motor, the pressing heads are detachably arranged on the pressing components, and the motors are configured to drive the pressing components to move back and forth along the second direction so that the pressing heads abut against or separate from the parts to be pressed. The pressing mechanism is good in stability and strong in universality.

Description

Pressing mechanism

Technical Field

The invention relates to the technical field of pressing machinery, in particular to a pressing mechanism.

Background

In order to enhance the waterproof performance of the smart phone, a waterproof adhesive surface needs to be arranged at the joint of the mobile phone shell and the mobile phone screen in the production and assembly processes of the mobile phone. The waterproof glue face is in the assembly back, need put into the pressure equipment with cell phone case and cell-phone screen in the lump and carry out the pressfitting to guarantee the assembly quality of waterproof glue face. The pressing mechanism in the prior art has two technical problems, the first is that the stability is low, so that the precision of the pressing pressure value is not high; secondly, the application range of the pressing mechanism is narrow, and the universality is low.

Disclosure of Invention

The invention aims to provide a pressing mechanism which has the characteristics of good stability and strong universality.

In order to achieve the purpose, the invention adopts the following technical scheme:

a pressing mechanism comprises a carrier table and a pressing driving device, wherein a piece to be pressed is placed on the carrier table and can be driven to reciprocate along a first direction a; the pressing driving devices are multiple in number, each pressing driving device comprises at least one pressing head, a pressing assembly and a motor, the at least one pressing head is detachably arranged on the pressing assembly, and the motor is configured to drive the pressing assembly to move back and forth along a second direction b so that the pressing heads abut against or separate from the piece to be pressed.

Optionally, the pressing mechanism further includes a base, and the carrier table and the pressing assembly are movably disposed on the base.

Optionally, the pressing assembly includes a moving module, a pressing module, a stroke sensor and a pressure sensor, and the motor can drive the moving module to move back and forth along the second direction b; one end of the pressing module, which is far away from the carrier table, is connected with the moving module, and one end of the pressing module, which faces the carrier table, is provided with the pressing head, and the pressing head is used for pressing the piece to be pressed; the stroke sensor is positioned on one side of the moving module, arranged on the base and used for detecting the linear distance of the moving module, which needs to move along the second direction b; and the pressure sensor is arranged on the pressing module and used for detecting the pressure value of the pressing head abutting against the piece to be pressed.

Optionally, the pressing mechanism further includes a connecting plate, the connecting plate is composed of two plate bodies connected to each other, one of the plate bodies is connected to the moving module, and the other plate body is connected to the pressing module, so that the moving module and the pressing module are located on different planes.

Optionally, the moving module includes a lead screw and a moving block, the lead screw is disposed on the moving block in a penetrating manner, and one end of the lead screw is connected to the motor so as to enable the moving block to move back and forth along the second direction b under the driving of the motor.

Optionally, the pressing assembly further comprises a protection plate, and the protection plate is spaced towards the moving module.

Optionally, the press-fit module comprises a support seat and a guide bearing, the support seat comprises a first support plate and a second support plate which are arranged at intervals along the second direction b, one end of the guide bearing is movably arranged on the first support plate in a penetrating manner, and the other end of the guide bearing is arranged on the second support plate; the pressure sensor is arranged between the first supporting plate and the second supporting plate.

Optionally, the press-fit module further includes an elastic component, the support seat further includes a third support plate, the third support plate and the second support plate are arranged at an interval along the second direction b, the elastic component is arranged between the second support plate and the third support plate, and the pressing head is arranged on one side of the third support plate facing the carrier table.

Optionally, the elastic assembly includes two reinforcing rods and an elastic member, the two reinforcing rods are fixed to the second support plate and the third support plate respectively, and the two reinforcing rods are arranged in a crossing manner; and the number of the elastic parts is four, one ends of the two elastic parts are respectively connected to two ends of one of the reinforcing rods, the other ends of the two elastic parts are connected with the second supporting plate, one ends of the other two elastic parts are respectively connected to two ends of the other reinforcing rod, and the other ends of the other two elastic parts are connected with the third supporting plate.

Optionally, the pressing mechanism further includes a clamping device, and the clamping device is disposed on the carrier table and is used for clamping the to-be-pressed piece.

Compared with the prior art, the pressing mechanism has the beneficial effects that: the pressing mechanism is characterized in that a to-be-pressed piece is placed on the carrier table and can be driven to move to the position below the pressing assembly along a first direction a, the pressing head is detachably arranged on the pressing assembly, the motor is configured to drive the pressing assembly to move back and forth along a second direction b so that the pressing head abuts against the to-be-pressed piece, the motor drives the detachable pressing head of the pressing assembly, the stability is good, and the precision of a driving pressure value is high; different pressure heads can be selected for different products to be pressed, so that the pressing mechanism is wide in application range, high in universality and convenient to operate.

Drawings

Fig. 1 is a schematic structural diagram of a stitching mechanism according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 labeled A;

fig. 3 is a schematic structural diagram of a pressing module according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a to-be-pressed part on a carrier table clamped by a clamping device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a motor connected to a mobile module according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a stand according to an embodiment of the present invention.

Reference numerals:

the pressing device comprises a part-to-be-pressed 100, a carrier table-1, a pressing driving device-2, a pressing head-21, a motor-22, a moving module-23, a screw rod-231, a moving block-232, a pressing module-24, a first supporting plate-241, a second supporting plate-242, a third supporting plate-243, a guide bearing-244, an elastic component-245, a reinforcing rod-2451, an elastic component-2452, a stroke sensor-25, a pressure sensor-26, a protective plate-27, a machine base-3, a connecting plate-4, a clamping device-5 and a driving component-6.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 4, a pressing mechanism includes a carrier table 1 and a pressing driving device 2, wherein a to-be-pressed piece 100 is placed on the carrier table 1 and can drive the to-be-pressed piece 100 to move back and forth along a first direction a; the pressing driving devices 2 are multiple, each pressing driving device 2 includes at least one pressing head 21, a pressing assembly and a motor 22, the at least one pressing head 21 is detachably disposed on the pressing assembly, and the motor 22 is configured to drive the pressing assembly to move back and forth along the second direction b, so that the pressing head 21 abuts against or separates from the to-be-pressed piece 100.

It can be understood that, the to-be-pressed piece 100 is placed on the carrier table 1, the carrier table 1 can drive the to-be-pressed piece 100 to move to the position below the pressing head 21 along the first direction a, the motor 22 drives the pressing component to move downwards along the second direction b so that the pressing head 21 is stopped against the to-be-pressed piece 100, and the to-be-pressed piece 100 is pressed; the motor 22 drives the pressing component to move upward along the second direction b so that the pressing head 21 is separated from the to-be-pressed piece 100, and the carrier table 1 drives the to-be-pressed piece 100 to move to the side of the operator along the first direction a so as to conveniently take out the to-be-pressed piece 100 after pressing and conveniently place the next to-be-pressed piece 100. The pressing mechanism drives the detachable pressing head 21 of the pressing component through the motor 22, so that the stability is good, and the precision of the driving pressure value is high; different pressing heads 21 can be selected for different products to be pressed, so that the pressing mechanism is wide in application range, high in universality and convenient to operate.

Advantageously, as shown in fig. 6, the stitching mechanism further includes a driving assembly 6, the driving assembly 6 is used for driving the carrier table 1 to reciprocate along the first direction a, the driving assembly 6 includes a driving motor 22, a screw rod 231 and a matching piece, the matching piece is connected with the carrier table 1, the driving motor 22 can drive the screw rod 231 to rotate so as to drive the matching piece to reciprocate along the first direction a, and the carrier table 1 is driven by the matching piece to reciprocate along the first direction a at the same time.

In the preferred embodiment of the present invention, as shown in fig. 1, there are two stitching driving devices 2, two stitching driving devices 2 are arranged in parallel, and the pressing heads 21 on the two stitching driving devices 2 stitch different positions of the to-be-stitched piece 100.

In a preferred embodiment of the present invention, as shown in fig. 1, each stitching drive 2 comprises two pressing heads 21, and the two pressing heads 21 are arranged at intervals at two ends of the stitching assembly.

Optionally, as shown in fig. 1, the pressing mechanism further includes a base 3, and the carrier table 1 and the pressing assembly are movably disposed on the base 3. It will be appreciated that the base 3 is used to support the carrier table 1 and the stitching drive 2 for ease of use and installation.

Advantageously, the base 3 is provided with a slide rail, the carrier table 1 is provided with a slide block connected with the slide rail, and the carrier table 1 can be slidably arranged on the base 3, so that the stability is good and the working efficiency is high.

Alternatively, as shown in fig. 1 and 5, the stitching assembly includes a moving module 23, a stitching module 24, a stroke sensor 25 and a pressure sensor 26, and the motor 22 can drive the moving module 23 to reciprocate along the second direction b; one end of the pressing module 24, which is far away from the carrier table 1, is connected with the moving module 23, one end of the pressing module 24, which faces the carrier table 1, is provided with a pressing head 21, and the pressing head 21 is used for pressing the piece to be pressed 100; the stroke sensor 25 is positioned at one side of the moving module 23, is arranged on the base 3, and is used for detecting the linear distance of the moving module 23 required to move along the second direction b; and the pressure sensor 26 is disposed on the pressing module 24 and is used for detecting a pressure value of the pressing module 24 abutting against the to-be-pressed piece 100.

It should be noted that, the stroke sensor 25 transmits the detected position information of the moving module 23 to the signal processor, and the signal processor calculates the linear distance that the moving module 23 needs to move along the second direction b, so as to control the moving module 23 to accurately move downward by the required linear distance until the pressing head 21 abuts against the to-be-pressed piece 100; when the pressure value of the pressing module 24 is equal to the preset value, the pressure sensor 26 can detect the pressure value of the pressing module 24 on the piece 100 to be pressed, and when the pressure value is equal to the preset value, the pressure sensor 26 transmits information to the signal processor in time, and the signal processor controls the motor 22 to drive the pressing module 24 to move upward along the second direction b so as to separate the pressing head 21 from the piece 100 to be pressed.

Optionally, as shown in fig. 1, the pressing mechanism further includes a connecting plate 4, where the connecting plate 4 is formed by two plates connected to each other, one of the plates is connected to the moving module 23, and the other plate is connected to the pressing module 24, so that the moving module 23 and the pressing module 24 are located on different planes.

It should be noted that, when the pressing module 24 is pressed down until the pressing head 21 abuts against the to-be-pressed part 100, since the moving module 23 is connected to the pressing module 24 through the connecting plate 4, so that the moving module 23 and the pressing module 24 are located on different planes, the pressure sensor 26 is not easily affected by the structures of the components except the pressing module 24, the detected pressure value is more accurate, and the precision of the pressing mechanism is further improved.

Alternatively, as shown in fig. 5, the moving module 23 includes a lead screw 231 and a moving block 232, the lead screw 231 is disposed on the moving block 232, and one end of the lead screw 231 is connected to the motor 22 to enable the moving block 232 to move back and forth in the second direction b under the driving of the motor 22. It can be understood that, the motor 22 drives the lead screw 231 to rotate so as to drive the moving block 232 to reciprocate along the second direction b, which is more stable and reliable. Supplementary note is that the motor 22 is connected to the lead screw 231 through a coupling.

Optionally, as shown in fig. 1, the pressing assembly further includes a protection plate 27, the protection plate 27 and the moving module 23 are disposed at an interval, the protection plate 27 has the functions of dust prevention and impurity prevention, so that impurities are prevented from entering the moving module 23, the moving speed is reduced, and the normal operation of the moving module 23 is further ensured. In addition, the protection plate 27 also has a reinforcing effect and is good in stability.

Optionally, as shown in fig. 3, the pressing module 24 includes a supporting base and a guiding bearing 244, the supporting base includes a first supporting plate 241 and a second supporting plate 242 spaced along the second direction b, one end of the guiding bearing 244 movably penetrates through the first supporting plate 241, and the other end is disposed on the second supporting plate 242; the pressure sensor 26 is disposed between the first and

second support plates

241 and 242.

It can be understood that the four guide bearings 244 are used for guiding the pressing module 24 to move along the second direction b, and the four guide bearings 244 are respectively located at the four included angles of the supporting plate, so that the guiding is more uniform and reliable. In some preferred embodiments of the present invention, the guide bearing 244 is a sliding bearing.

Optionally, as shown in fig. 3, the pressing module 24 further includes an elastic component 245, the supporting seat further includes a third supporting plate 243, the third supporting plate 243 and the second supporting plate 242 are disposed at an interval along the second direction b, the elastic component 245 is disposed between the second supporting plate 242 and the third supporting plate 243, and a pressing head 21 is disposed on a side of the third supporting plate 243 facing the carrier table 1.

It can be understood that when the pressing heads 21 abut on the to-be-pressed piece 100, since the elastic component 245 is disposed between the second supporting plate 242 and the third supporting plate 243, the elastic force of the elastic component 245 can adjust the abutting action points of the respective pressing heads 21, so that the plurality of pressing heads 21 can uniformly apply the pressure on the to-be-pressed piece 100, and the pressing quality is further improved.

Alternatively, as shown in fig. 3, the elastic assembly 245 includes two reinforcing rods 2451 and two elastic members 2452, the two reinforcing rods 2451 are fixed on the second support plate 242 and the third support plate 243, respectively, and the two reinforcing rods 2451 are arranged in a crossing manner; and four elastic members 2452, wherein one ends of two elastic members 2452 are respectively connected to two ends of one of the reinforcing rods 2451, the other ends of the two elastic members 2452 are connected to the second supporting plate 242, one ends of the other two elastic members 2452 are respectively connected to two ends of the other reinforcing rod 2451, and the other ends of the other two elastic members 2452 are connected to the third supporting plate 243.

It can be appreciated that the reinforcement bar 2451 effectively connects and fixes the second support plate 242 and the third support plate 243, and the four elastic members 2452 are located at different directions of the support plates, so as to more uniformly adjust the acting point of the pressing head 21, thereby improving the pressing quality. In some preferred embodiments of the invention, the resilient member 2452 is a spring.

Optionally, as shown in fig. 4, the pressing mechanism further includes a clamping device 5, and the clamping device 5 is disposed on the carrier table 1 and is used for clamping the to-be-pressed part 100, so as to better fix the to-be-pressed part 100 and facilitate the subsequent pressing operation.

In some embodiments of the present invention, the carrier table 1 is provided with an accommodating groove in which the to-be-pressed piece 100 is placed, and the clamping device 5 includes two clamping assemblies respectively disposed in the length direction and the width direction of the to-be-pressed piece 100, so as to effectively fix the to-be-pressed piece 100.

Advantageously, a heating rod is disposed on the carrier table 1 for heating the to-be-pressed piece 100 to achieve the adhesive bonding.

Example (b):

as shown in fig. 1, a pressing mechanism includes a carrier table 1, two pressing driving devices 2, a connecting plate 4 and a base 3, as shown in fig. 4, a to-be-pressed piece 100 is placed on the carrier table 1 and can drive the to-be-pressed piece 100 to move back and forth along a first direction a; as shown in fig. 1 and 2, each stitching driving device 2 includes two pressing heads 21, a stitching assembly and a motor 22, the two pressing heads 21 are detachably disposed on the stitching assembly, the motor 22 is configured to drive the stitching assembly to move back and forth along the second direction b so that the pressing heads 21 abut against or separate from the piece to be stitched 100, and the carrier table 1 and the stitching assembly are movably disposed on the base 3. As shown in fig. 1 and 5, the pressing assembly includes a moving module 23, a pressing module 24, a stroke sensor 25, a pressure sensor 26, a protection plate 27 and a clamping device 5, the motor 22 can drive the moving module 23 to move back and forth along a second direction b, one end of the pressing module 24 away from the carrier table 1 is connected with the moving module 23, one end of the pressing module 24 facing the carrier table 1 is provided with a pressing head 21, and the pressing head 21 is used for pressing the to-be-pressed piece 100; the stroke sensor 25 is positioned at one side of the moving module 23, is arranged on the base 3, and is used for detecting the linear distance of the moving module 23 required to move along the second direction b; and the pressure sensor 26 is arranged on the pressing module 24 and used for detecting the pressure value of the pressing head 21 abutting on the piece to be pressed 100. The connecting plate 4 is composed of two interconnected plates, one of which is connected to the moving module 23, and the other of which is connected to the pressing module 24 so that the moving module 23 and the pressing module 24 are located on different planes. The moving module 23 includes a lead screw 231 and a moving block 232, the lead screw 231 is disposed on the moving block 232, and one end of the lead screw 231 is connected to the motor 22 so as to enable the moving block 232 to move reciprocally in the second direction b under the driving of the motor 22. The protection plate 27 is spaced toward the moving module 23. As shown in fig. 3, the pressing module 24 includes a supporting base, a guiding bearing 244 and an elastic component 245, the supporting base includes a first supporting plate 241, a second supporting plate 242 and a third supporting plate 243 spaced along the second direction b, one end of the guiding bearing 244 movably penetrates through the first supporting plate 241, and the other end is disposed on the second supporting plate 242; the pressure sensor 26 is disposed between the first and

second support plates

241 and 242. The third support plate 243 and the second support plate 242 are disposed at an interval along the second direction b, the elastic assembly 245 is disposed between the second support plate 242 and the third support plate 243, and the pressing head 21 is disposed on a side of the third support plate 243 facing the carrier table 1. The elastic assembly 245 comprises two reinforcing rods 2451 and four elastic members 2452, the two reinforcing rods 2451 are respectively fixed on the second support plate 242 and the third support plate 243, and the two reinforcing rods 2451 are arranged in a crossed manner; one end of each of the two elastic members 2452 is connected to each of the two ends of one of the reinforcing rods 2451, the other ends of the two elastic members 2452 are connected to the second supporting plate 242, one end of each of the other two elastic members 2452 is connected to each of the two ends of the other reinforcing rod 2451, the other ends of the other two elastic members 2452 are connected to the third supporting plate 243, and the clamping device 5 is disposed on the carrier table 1 and used for clamping the to-be-laminated member 100.

The press-fit mechanism of the preferred embodiment has the working principle that: the pressing piece 100 to be pressed is placed on the carrier table 1, the clamping device 5 clamps the pressing piece 100 to be pressed, the carrier table 1 drives the pressing piece 100 to move to the lower part of the pressing head 21 along the first direction a, the detected position information of the moving module 23 is transmitted to the signal processor by the stroke sensor 25, the information processor calculates the linear distance of the moving module 23 required to move along the second direction b, the motor 22 drives the screw rod 231 to rotate so as to drive the pressing component connected with the moving block 232 to move downwards along the second direction b by the required linear distance, so that the pressing head 21 is stopped against the pressing piece 100, the guide bearing 244 guides along the second direction b in the pressing process of the pressing module 24, the elastic component 245 adjusts the acting point of the pressing head 21, the pressure sensor 26 can detect the pressure value of the pressing module 24 placed on the pressing piece 100 to be pressed, when the pressure value is equal to the preset value, the pressure sensor 26 transmits the information to the signal processor in time, the signal processor controls the motor 22 to drive the pressing module 24 to move upward along the second direction b so as to separate the pressing head 21 from the to-be-pressed piece 100, and the carrier table 1 drives the to-be-pressed piece 100 to move to the side of the operator along the first direction a so as to conveniently take out the to-be-pressed piece 100 after pressing and conveniently place the next to-be-pressed piece 100.

In the description herein, references to the description of "some embodiments," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Further, it is to be understood that the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "mounted," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Those skilled in the art can understand the above specific meanings included in the present invention according to specific situations.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A laminating mechanism, comprising:

the pressing device comprises a carrier table (1), wherein a piece to be pressed (100) is placed on the carrier table (1) and can drive the piece to be pressed (100) to move back and forth along a first direction a; and

the pressing driving device (2) comprises a plurality of pressing driving devices (2), each pressing driving device (2) comprises at least one pressing head (21), a pressing component and a motor (22), at least one pressing head (21) is detachably arranged on the pressing component, and the motor (22) is configured to drive the pressing component to move back and forth along a second direction b so that the pressing heads (21) are abutted to or separated from the piece to be pressed (100).

2. The laminating mechanism according to claim 1, further comprising a base (3), wherein the carrier table (1) and the laminating assembly are movably disposed on the base (3).

3. The laminating mechanism of claim 2, wherein the laminating assembly includes:

a moving module (23), wherein the motor (22) can drive the moving module (23) to move back and forth along the second direction b;

the pressing module (24), one end of the pressing module (24) far away from the carrier table (1) is connected with the moving module (23), the pressing head (21) is arranged on one end of the pressing module (24) facing the carrier table (1), and the pressing head (21) is used for pressing the piece to be pressed (100);

the stroke sensor (25) is positioned on one side of the moving module (23), arranged on the base (3) and used for detecting the linear distance of the moving module (23) required to move along the second direction b; and

the pressure sensor (26) is arranged on the pressing module (24) and used for detecting the pressure value of the pressing head (21) abutting against the piece to be pressed (100).

4. A stitching mechanism according to claim 3, further comprising a connecting plate (4), wherein the connecting plate (4) comprises two interconnected plates, one of which is connected to the moving module (23) and the other of which is connected to the stitching module (24) such that the moving module (23) and the stitching module (24) are in different planes.

5. A stitching mechanism according to claim 3, wherein the moving module (23) comprises a lead screw (231) and a moving block (232), the lead screw (231) is disposed through the moving block (232), and one end of the lead screw (231) is connected to the motor (22) so as to enable the moving block (232) to move back and forth along the second direction b under the driving of the motor (22).

6. A stitching mechanism according to claim 3, wherein the stitching assembly further comprises a protective plate (27), the protective plate (27) being spaced towards the moving module (23).

7. A pressing mechanism according to claim 3, wherein the pressing module (24) comprises a supporting base and a guiding bearing (244), the supporting base comprises a first supporting plate (241) and a second supporting plate (242) which are arranged at intervals along the second direction b, one end of the guiding bearing (244) is movably arranged on the first supporting plate (241) in a penetrating way, and the other end is arranged on the second supporting plate (242); the pressure sensor (26) is disposed between the first support plate (241) and the second support plate (242).

8. The stitching mechanism according to claim 7, wherein the stitching module (24) further comprises an elastic member (245), the supporting base further comprises a third supporting plate (243), the third supporting plate (243) and the second supporting plate (242) are spaced apart from each other along the second direction b, the elastic member (245) is disposed between the second supporting plate (242) and the third supporting plate (243), and a side of the third supporting plate (243) facing the carrier table (1) is provided with the pressing head (21).

9. A stitching mechanism according to claim 8, wherein the resilient member (245) comprises:

two reinforcing rods (2451), wherein the number of the reinforcing rods (2451) is two, the two reinforcing rods (2451) are respectively fixed on the second supporting plate (242) and the third supporting plate (243), and the two reinforcing rods (2451) are arranged in a crossed manner; and

the number of the elastic pieces (2452) is four, one end of each of two elastic pieces (2452) is connected to each end of one of the reinforcing rods (2451), the other end of each of two elastic pieces (2452) is connected to the second supporting plate (242), one end of each of the other two elastic pieces (2452) is connected to each end of the other reinforcing rod (2451), and the other end of each of the other two elastic pieces (2452) is connected to the third supporting plate (243).

10. A stitching mechanism according to claim 1, further comprising a clamping device (5), the clamping device (5) being arranged on the carrier table (1) for clamping the piece to be stitched (100).