A secondary pressurizing device and a clamping device

Abstract

The utility model discloses a secondary pressurizing device, which can drive a clamping plate to clamp fabric, and includes a driving group, wherein the driving group includes: a driving cylinder having a cavity; one end of a driving rod is connected to the clamping plate, and the driving rod can be extended and retracted along the cavity of the driving cylinder; the driving rod has at least two strokes in the cavity of the driving cylinder, so that the driving rod can drive the clamping plate to move twice, the clamping plate moves for the first time to pre-clamp the fabric, and the clamping plate moves for the second time to pressurize and clamp the fabric. The present application enables the driving rod to drive the clamping plate to move twice, and even if a gap appears between the fabric and the clamping table during the first pre-clamping, the fabric can be clamped during the second movement of the clamping plate, which greatly improves the applicability of the clamping plate for clamping fabric, expands the applicable scope of the clamping plate, saves the time for replacing the driving device or the machine table, and improves work efficiency.

Description

Technical Field

[0001] The utility model relates to the field of pneumatic control, in particular to a secondary pressurizing device and a clamping device. Background Art

[0002] In computer sewing technology, it is necessary to control the threading of the computer sewing machine to ensure the effect of sewing the fabric. In order to avoid the fabric deviation during threading and causing stitching dislocation, it is generally necessary to press the fabric to fix the fabric on a specific table or positioning mechanism. In the process of sewing with a computer sewing machine, there are ways to use both hands and feet, such as manually fixing the fabric and then driving the needle to thread with a foot pedal. In order to ensure the safety of the operator, there are also ways to directly replace the manual method by setting an auxiliary device for fixing the fabric, such as designing a clamping mechanism for clamping the fabric. The clamping mechanism usually needs to use a cylinder to drive the clamping plate to clamp the fabric. The cloth can be clamped once, and when the thickness of the cloth does not match the maximum stroke of the cylinder, a gap will remain between the clamp and the cloth, which is not conducive to the final effect of fixing the cloth. Even if it fits perfectly, the clamp is more suitable for positioning the cloth, and there is still a risk of cloth deviation during subsequent wiring. Therefore, the clamping mechanism of the prior art is more suitable for clamping a single thicker cloth, and is restrictive on the adaptable thickness of the clamped cloth, which is not conducive to the final clamping effect after replacing the cloth. Utility Model Content

[0003] The utility model provides a secondary pressurizing device which can effectively solve the problem that the existing clamping mechanism has great limitations on the adaptability thickness of the clamped cloth.

[0004] According to one aspect of the utility model, a secondary pressurizing device is provided, which can drive a clamping plate to clamp a cloth, and includes a driving group, wherein the driving group includes:

[0005] A drive cylinder having a cavity;

[0006] A driving rod, one end of which is connected to the clamping plate, and the driving rod can be extended and retracted along the cavity of the driving cylinder;

[0007] The driving rod has at least two strokes in the cavity of the driving cylinder, so that the driving rod can drive the clamping plate to move at least twice. The first movement of the clamping plate pre-clamps the cloth, and the second movement of the clamping plate presses and clamps the cloth.

[0008] In some embodiments, the driving cylinder includes a first cylinder body and a second cylinder body, and the driving rod includes a first rod and a second rod. The first cylinder body drives the first rod to extend and retract to drive the second cylinder body and the second rod to move, and the second cylinder body drives the second rod to extend and retract to drive the clamping plate to move. Thus, the driving cylinder is a split structure, and after the first rod is extended and retracted, the second rod is controlled to complete the extension and retraction to achieve two extension strokes.

[0009] In some embodiments, the first rod can be extended and retracted along the cavity of the first cylinder, and one end of the first rod is connected to the clamping plate, and the second rod can be extended and retracted along the cavity of the second cylinder, and one end of the second rod is connected to the first cylinder. Thus, the first rod is used to drive the second cylinder and the second rod to move, and the second rod is used to drive the clamping plate to move.

[0010] In some embodiments, the first rod and the second rod are both provided with a driving member, the first cylinder body and the second cylinder body are both provided with a group of orifices, the driving member is located between the orifices, and the driving member is moved by pressurizing the orifices to drive the first rod and the second rod to extend and retract. Thus, the orifices can be connected to an external inflatable device and communicate with the cavities of the first cylinder body and the second cylinder body, so as to drive the driving rod to complete the extension and retraction action.

[0011] In some embodiments, the driving rod is provided with at least two driving members, the driving cylinder is provided with at least two groups of orifices, at least one of the driving members is located between a group of the orifices, and the orifices are pressurized successively to move the driving member to drive the driving rod to extend and retract twice. Thus, an integral structure is provided, and the driving rod is driven to perform two-stroke extension and retraction actions through the two groups of orifices.

[0012] In some embodiments, the driving group is provided with two groups, two second rods are connected to both ends of the clamping plate, two first rods are extended and retracted to drive the second cylinder to move synchronously, and two second rods are extended and retracted to drive the clamping plate to move. Thus, by providing two driving groups, the driving rod can drive the clamping plate in a more balanced manner and is less likely to deviate.

[0013] In some embodiments, a connecting plate is provided at the bottom of the two second cylinders, one end of the first rod is connected to the connecting plate, and the first rod is extended to drive the two second cylinders to move synchronously. Thus, the connecting plate is provided to improve the synchronization of the movement of the two second cylinders.

[0014] In some embodiments, the second rod is provided with an abutment portion and is located in the cavity of the second cylinder body, and the first rod contracts to drive the second cylinder body to move and the abutment portion abuts against the second cylinder body to drive the second rod to move. Thus, the abutment portion can abut against the second cylinder body, and the maximum extension stroke of the second rod can be limited.

[0015] In some embodiments, the first rod and the second rod are both provided with an adjusting member, the adjusting member is movably arranged on the first rod and the second rod, and the adjusting member is respectively exposed outside the first cylinder body and the second cylinder body and can abut against the first cylinder body and the second cylinder body. Thus, the adjusting member is exposed outside the cylinder body and can abut against the cylinder body, and is used to limit the maximum retraction stroke of the driving rod, and the stroke of the clamping plate can be adjusted by the adjusting member to adjust the clamping of fabrics of different thicknesses.

[0016] In a second aspect, a clamping device is provided, which can be installed on a press table, and includes the secondary pressurizing device and a clamping plate described in the first aspect, wherein the secondary pressurizing device is arranged on the press table.

[0017] Compared with the prior art, the secondary pressurizing device of the utility model has the following beneficial effects:

[0018] The present application sets a driving rod and a driving cylinder, and the driving rod drives the clamping plate to move, and the driving rod has at least two strokes in the cavity of the driving cylinder, so that the driving rod can drive the clamping plate to move a second time. The clamping plate can pre-clamp the fabric during the first movement, and can pressurize and clamp the fabric during the second movement of the clamping plate. Even if a gap appears between the fabric and the clamping table during the first pre-clamping, the fabric can be clamped during the second movement of the clamping plate, or when the fabric has been clamped after the first movement of the clamping plate, the driving rod can be controlled to no longer execute the second stroke. Therefore, the applicability of the clamping plate for clamping fabrics is greatly improved, the application range of the clamping plate is expanded, the time for replacing the driving device or the machine table is omitted, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a reference diagram for the use of the secondary pressurizing device of the present utility model;

[0020] Figure 2 It is a structural schematic diagram of the secondary pressurizing device of the utility model;

[0021] Figure 3 It is a cross-sectional view of the secondary pressurizing device of the utility model;

[0022] Figure 4 It is a schematic diagram of another embodiment of the secondary pressurizing device of the utility model;

[0023] Figure 5It is a schematic diagram of the secondary pressurizing device with an adjusting member of the utility model;

[0024] Figure 6 It is a schematic diagram of an integrated structural implementation scheme of the secondary pressurizing device of the utility model.

[0025] In the figure: 1-driving cylinder, 1a-first cylinder body, 1b-second cylinder body, 2-driving rod, 2a-first rod, 2b-second rod, 11-first orifice, 12-second orifice, 13-third orifice, 14-fourth orifice, 15-cavity, 21-driving member, 22-abutting part, 23-connecting plate, 3-adjusting member. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0027] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] The utility model relates to a secondary pressurizing device, which is a driving device suitable for the field of computer sewing machine processing. This embodiment takes pneumatic transmission as an example. The output function of the secondary pressurizing device is similar to that of a cylinder. It can be connected to a clamping plate 10 and drive it. The clamping plate 10 is used to clamp the fabric to facilitate the computer sewing machine to route the fabric. Of course, the secondary pressurizing device is also suitable for hydraulic transmission, which can be selected according to the actual application situation.

[0029] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0030] Figure 1 The secondary pressurizing device according to one embodiment of the present utility model is schematically shown. Figure 1 As shown, the secondary pressurizing device includes a driving group, and the driving group includes a driving cylinder 1 and a driving rod 2.

[0031] like Figure 2 , Figure 3As shown, the driving cylinder 1 has a cavity 15 inside, which can supply air pressure flow. The driving cylinder 1 can adopt an integral structure or a split structure. This embodiment takes the split structure as an example. The driving cylinder 1 includes a first cylinder body 1a and a second cylinder body 1b. In actual use, the first cylinder body 1a is located below the second cylinder body 1b. The first cylinder body 1a can be set on the press table of the computer sewing machine, and the second cylinder body 1b can move relative to the first cylinder body 1a. The first cylinder body 1a and the second cylinder body 1b both have a cavity 15 inside, and need to cooperate with an external inflation drive device, such as an air pump. The first cylinder body 1a and the second cylinder body 1b are both provided with a group of orifices, and the group of orifices includes two orifices, namely a first orifice 11 and a second orifice 12. The second cylinder body 1b has a third orifice 13 and a fourth orifice 14. The orifices are connected to the cavities 15 of the first cylinder body 1a and the second cylinder body 1b, and can be connected to the external inflation drive device through a conduit.

[0032] One end of the driving rod 2 is connected to the splint 10 to drive the splint 10 to move, and the driving rod 2 can be extended and retracted along the cavity 15 of the driving cylinder 1. Specifically, the driving rod 2 includes a first rod 2a and a second rod 2b. The first rod 2a can move along the cavity 15 of the first cylinder body 1a. The first rod 2a is partially exposed at the top of the first cylinder body 1a and one end of its top is connected to the bottom of the second cylinder body 1b. The second rod 2b can move along the cavity 15 of the second cylinder body 1b. The second rod 2b is partially exposed at the top of the second cylinder body 1b and one end of its top is connected to the splint 10. Preferably, the axial direction of the first rod 2a is aligned with the axial direction of the second rod 2b. Furthermore, the first rod 2a and the second rod 2b are both provided with a driving member 21, which can be a piston. The driving member 21 is located between the orifices, that is, the driving member 21 is respectively located between the first orifice 11 and the second orifice 12 and between the third orifice 13 and the fourth orifice 14. By introducing air pressure into the orifices, the driving member 21 can be moved in the cavity 15, thereby driving the first rod 2a and the second rod 2b to extend and retract. Among them, the top end of the first rod 2a is connected to the second cylinder body 1b, used to drive the second cylinder body 1b and the second rod 2b to move, and the top end of the second rod 2b is connected to the clamping plate 10, used to drive the clamping plate 10 to move.

[0033] Furthermore, the second rod 2b is provided with an abutment portion 22 and is located in the cavity 15 of the second cylinder body 1b. The diameter of the abutment portion 22 is larger than the diameter of the second rod 2b and can abut against the top of the second cylinder body 1b when in use, that is, the first rod 2a contracts and drives the second cylinder body 1b to move so that the abutment portion 22 abuts against the top of the second cylinder body 1b. Therefore, the second cylinder body 1b drives the first rod 2a to move through the abutment portion 22. The abutment portion 22 is also used to limit the maximum stroke of the first rod 2a.

[0034] In addition, after the first rod 2a performs the retraction action, it drives the second cylinder 1b to move and approach the first cylinder 1a, and a gap is still maintained between the first cylinder 1a and the second cylinder 1b to avoid collision between the first cylinder 1a and the second cylinder 1b.

[0035] When in use, the splint 10 is in an open state (taking the up and down direction as an example). When the cloth needs to be compressed, air pressure is first introduced into the second orifice 12 to make the driving member 21 drive the first rod 2a to retract, thereby driving the second cylinder 1b and the second rod 2b to move downward, that is, driving the splint 10 to move for the first time, which can pre-clamp the cloth. Then, air pressure is introduced into the fourth orifice 14 of the second cylinder 1b to make the driving member 21 drive the second rod 2b to retract, that is, driving the splint 10 to move for the second time. After the first pre-clamping, the second movement of the splint 10 forms a secondary pressurization effect on the cloth in comparison, so that the cloth can be further clamped. For example, the splint 10 can be controlled to move to a position 1 mm away from the cloth (just clamped) for the first time, and then the splint 10 moves downward 2 mm for the second time (pressurized clamping). When the splint 10 needs to be retracted, air pressure is first introduced into the third port 13 of the second cylinder 1b to lift the second rod 2b upward, and then air pressure is introduced into the first port 11 of the first cylinder 1a to drive the first rod 2a upward and finally restore the splint 10.

[0036] In the above process, the driving rod 2 has at least two strokes in the cavity 15 of the driving cylinder 1. This embodiment takes two strokes as an example. The two strokes are the sequential extension and retraction processes of the first rod 2a and the second rod 2b. Therefore, the secondary pressurizing device enables the splint 10 to have the function of pressing the cloth by secondary pressurization. The first stroke is used to drive the splint 10 to pre-clamp the cloth, and the second stroke is used to drive the splint 10 to pressurize and clamp the cloth. Therefore, the problem of too large a gap between the splint 10 and the cloth when it moves once can be avoided. The second clamping can fill the gap during the first movement. At the same time, if the cloth can be clamped during the first movement of the splint 10, there is no need to control the second movement of the splint 10.

[0037] In some embodiments, Figure 4As shown, the driving group is provided with two groups, namely, two first cylinder bodies 1a and second cylinder bodies 1b, and two first rods 2a and second rods 2b, and the two first cylinder bodies 1a are arranged horizontally in parallel, and the second cylinder body 1b is similar, that is, the two driving groups are arranged in parallel, and can perform telescopic actions at the same time, the top ends of the two second rods 2b are connected to the two ends of the bottom feet of the clamping plate 10, the two first rods 2a are telescoped at the same time to drive the two second cylinder bodies 1b to move synchronously, and the two second rods 2b are telescoped at the same time to drive the clamping plate 10 to move, which strengthens the balance of the movement of the clamping plate 10, and can further ensure the centering of the clamping plate 10, avoiding displacement or inadequate pressing during movement. Further, a connecting plate 23 is provided at the bottom of the two second cylinder bodies 1b, that is, the two second cylinder bodies 1b are arranged on the connecting plate 23 at the same time, and the top end of the first rod 2a is connected to the connecting plate 23 to facilitate driving the second cylinder body 1b, and the connecting plate 23 is used to further strengthen the synchronization of the two second cylinder bodies 1b during movement. In other embodiments, two secondary pressurizing devices are provided, which are respectively connected to the two bases of the splint 10. The inflation device can act on the two secondary pressurizing devices at the same time, so that the splint 10 can press the fabric through its middle part and can adapt to various press table structures.

[0038] In some embodiments, Figure 5 As shown, an adjusting member 3 is provided on both the first rod 2a and the second rod 2b. The adjusting member 3 can be a nut, which can move relatively on the first rod 2a and the second rod 2b through threaded cooperation, or can move and lock on the first rod 2a and the second rod 2b. For example, the adjusting member 3 is movably arranged on the second rod 2b and exposed to the outside of the second cylinder body 1b. When in use, it can abut against the top surface of the second cylinder body 1b to adjust the maximum retraction stroke of the second rod 2b, thereby controlling the movement stroke of the splint 10. The design principle of the adjusting member 3 on the first rod 2a is the same.

[0039] In some embodiments, Figure 6As shown, the secondary pressurizing device is an integral structure, the first cylinder body 1a and the second cylinder body 1b are interconnected structures, that is, the cavity 15 of the first cylinder body 1a and the second cylinder body 1b is an integral structure, the drive rod 2 can be telescopically moved along the cavity 15, and the drive rod 2 is provided with at least two drive members 21. Taking the arrangement of two drive members 21 as an example, the drive cylinder 1 is provided with at least two groups of orifices (taking two groups of orifices as an example, they are the first orifice 11, the second orifice 12, the third orifice 13, and the fourth orifice 14, respectively). A single drive member 21 is located between a group of orifices (two orifices), and the drive member 21 is moved by pressurizing the orifices successively to drive the drive rod 2 to retract and retract twice. For example, when the drive rod 2 performs a retraction action, air pressure is introduced into the fourth orifice 14 so that one drive member 21 drives the drive rod 2 to move to a stroke, and then air pressure is introduced into the second orifice 12 so that another drive member 21 drives the drive rod 2 to move for the second time. When resetting, air pressure needs to be introduced into the first orifice 11 and the third orifice 13 in sequence to extend the drive rod 2.

[0040] In some embodiments, a clamping device is provided that can be installed on a press platform (not shown), including the secondary pressurizing device and a clamping plate 10. The secondary pressurizing device can be set on the press platform and one end of it is connected to the clamping plate 10. Specifically, the drive cylinder 1 can be connected to the side of the press platform, and the drive rod 2 can be connected to the clamping plate 10. The cloth can be placed on the top of the press platform, and the secondary pressurizing device can drive the clamping plate 10 to move close to the press platform and press the cloth.

[0041] The above description is only a preferred embodiment of the present invention. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. This does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A secondary pressurizing device capable of driving a clamping plate to clamp a cloth, characterized in that: The invention comprises a driving group, wherein the driving group comprises: A drive cylinder having a cavity; A driving rod, one end of which is connected to the clamping plate, and the driving rod can be extended and retracted along the cavity of the driving cylinder; The driving rod has at least two strokes in the cavity of the driving cylinder, so that the driving rod drives the clamping plate to move at least twice, the first movement of the clamping plate pre-clamps the cloth, and the second movement of the clamping plate presses and clamps the cloth.

2. The secondary pressurizing device according to claim 1, characterized in that: The driving cylinder includes a first cylinder body and a second cylinder body, and the driving rod includes a first rod and a second rod. The first rod is extended and retracted on the first cylinder body to drive the second cylinder body and the second rod to move, and the second rod is extended and retracted on the second cylinder body to drive the clamping plate to move.

3. The secondary pressurizing device according to claim 2, characterized in that: The first rod can be extended and retracted along the cavity of the first cylinder body, and one end of the first rod is connected to the clamping plate. The second rod can be extended and retracted along the cavity of the second cylinder body, and one end of the second rod is connected to the first cylinder body.

4. The secondary pressurizing device according to claim 2, characterized in that: The first rod and the second rod are both provided with a driving member, the first cylinder body and the second cylinder body are both provided with a group of holes, the driving member is located between the holes, and the driving member is moved by pressurizing the holes to drive the first rod and the second rod to extend and retract.

5. The secondary pressurizing device according to claim 1, characterized in that: The driving rod is provided with at least two driving members, the driving cylinder is provided with at least two groups of orifices, at least one of the driving members is located between a group of the orifices, and the driving members are moved by successively pressurizing the orifices to drive the driving rod to retract and retract twice.

6. The secondary pressurizing device according to claim 2, characterized in that: The driving group is provided with two groups, two of the second rods are connected to the two ends of the clamping plate, the two of the first rods are extended and retracted to drive the second cylinder body to move synchronously, and the two of the second rods are extended and retracted to drive the clamping plate to move.

7. The secondary pressurizing device according to claim 6, characterized in that: A connecting plate is provided at the bottom of the two second cylinder bodies, one end of the first rod is connected to the connecting plate, and the first rod is extended and retracted to drive the two second cylinder bodies to move synchronously.

8. The secondary pressurizing device according to claim 2, characterized in that: The second rod is provided with an abutment portion and is located in the cavity of the second cylinder body. The first rod contracts to drive the second cylinder body to move and the abutment portion abuts against the second cylinder body to drive the second rod to move.

9. The secondary pressurizing device according to claim 2, characterized in that: The first rod and the second rod are both provided with an adjusting member, the adjusting member is movably arranged on the first rod and the second rod, and the adjusting member is respectively exposed outside the first cylinder body and the second cylinder body and can abut against the first cylinder body and the second cylinder body.

10. A clamping device, which can be mounted on a press table, characterized in that: It comprises the secondary pressurizing device and the clamping plate as described in any one of claims 2 to 9, and the secondary pressurizing device is arranged on the pressing platform.

Images