Cloth clamping device, cloth clamping assembly and embroidery machine

Abstract

The utility model relates to the technical field of embroidery equipment, in particular to a cloth clamping device, a cloth clamping assembly and an embroidery machine, and the cloth clamping device comprises a blocking edge, a cloth clamping assembly and a cloth clamping device, the cloth clamping piece is arranged above the cloth clamping block and is provided with a material clamping plate which protrudes downwards and is arranged on one side of the cloth clamping block; a containing space for cloth is formed between the cloth clamping block and the material clamping plate. An air cylinder assembly is further arranged on the blocking edge and is provided with a piston rod which can move telescopically and is connected to the cloth clamping piece; a clamping part is arranged on one side, facing the cloth clamping block, of the material clamping plate; a butt joint part is arranged on the side, facing the clamping part, of the cloth clamping block. The utility model preferably provides the cloth clamping device which can save labor and stably clamp the cloth.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery equipment, and more specifically to a cloth clamping device, a cloth clamping component and an embroidery machine. Background Art

[0002] An embroidery machine is a mechanical device used to embroider on fabric. Before embroidery, the fabric needs to be firmly clamped to ensure the accuracy and quality of the embroidery.

[0003] The existing method of clamping and fixing the fabric is mostly achieved by manual operation (i.e., manually taking the fabric clamp to clamp the fabric). In this way, on the one hand, the fabric clamp needs to be clamped and disassembled manually, and usually there are multiple parts on a fabric that need to be clamped. All manual operations not only require a large amount of labor costs, but also lead to low production efficiency; on the other hand, when the fabric clamp is manually installed to clamp the fabric, the clamping force of the fabric clamp on the fabric (especially thinner fabric) often cannot meet the requirements, resulting in the inability to stably clamp the fabric, which affects the installation stability of the fabric, and is likely to have a bad impact on the embroidery quality of the fabric. Utility Model Content

[0004] One of the purposes of the utility model is to provide a cloth clamping device which can save labor and stably clamp the cloth in view of the shortcomings of the prior art.

[0005] The second purpose of the utility model is to provide a cloth clamping assembly having the above-mentioned cloth clamping device.

[0006] The third purpose of the utility model is to provide an embroidery machine having the above-mentioned cloth clamping device or cloth clamping assembly.

[0007] The technical solutions of the utility model are as follows:

[0008] Fabric clamping device, comprising:

[0009] The sidewall has a cloth block protruding upward;

[0010] The cloth clamping piece is placed above the cloth block, and comprises: a material clamping plate protruding downward and placed on one side of the cloth block;

[0011] A space for accommodating cloth is formed between the cloth clamping block and the clamping plate;

[0012] The sidewall is also provided with a cylinder assembly having a piston rod that can be telescopically moved and connected to the cloth clamping member, so as to: drive the clamping plate to approach / move away from the cloth clamping block to clamp / release the cloth placed in the accommodating space;

[0013] Furthermore, a clamping portion is provided on one side of the clamping plate facing the clamping cloth block;

[0014] A docking portion is provided on one side of the card block facing the clamping portion, and is configured to be plugged into the clamping portion when the clamping plate moves with the piston rod and approaches the card block.

[0015] As a further preferred solution, the piston rod is connected to the cloth clamping member via a moving seat and a cloth clamping seat in sequence;

[0016] The movable seat is movably connected to the outer end of the piston rod along with the piston rod, the cloth clamping seat is fixed to the cloth clamping member, and the cloth clamping seat is rotatably connected to the movable seat.

[0017] As a further preferred solution, the movable seat is provided with an elastic support member, which has a portion extending from the movable seat and abutting against the lower end surface of the cloth clamping seat;

[0018] The cloth clamping seat can be provided with elastic support for driving the cloth clamping seat to be lifted away from the cloth block.

[0019] As a further preferred solution, the elastic support member is a torsion spring, and the torsion spring is sleeved on a rotating shaft inserted in the movable seat;

[0020] Furthermore, the torsion spring has a portion that abuts downward against the movable seat, and another portion that abuts upward against the lower end surface of the cloth clamping seat, so as to provide the elastic support for the cloth clamping seat.

[0021] As a further preferred solution, the rib is provided with: a guide groove with a notch facing upward and extending in the telescopic movement direction of the piston rod;

[0022] The movable seat is adapted to be slidably installed in the guide groove.

[0023] As a further preferred solution, the retaining edge includes a mounting body and a connecting arm protrudingly disposed on one side surface of the mounting body;

[0024] The cloth clamping block is arranged on the connecting arm, and a material receiving groove with an upward notch for receiving a part of the cloth that is not clamped is formed in the interval between the connecting arm and the mounting body.

[0025] As a further preferred solution, the cylinder assembly includes a cylinder body, the inner end of the piston rod is placed in a first cavity in the cylinder body through the cylinder body shell, and the inner end of the piston rod is fixedly connected with: a piston member whose outer edge abuts against the first cavity;

[0026] The piston member divides the first cavity into an extension push cavity and a retraction push cavity, and the direction from the extension push cavity to the retraction push cavity is the extension direction of the piston rod;

[0027] The extension pushing chamber is connected to the first air inlet on the cylinder body through a first connecting channel;

[0028] The retracting pushing chamber is connected to the first air inlet on the cylinder body through a second connecting channel;

[0029] The cylinder body is also inserted with a plunger which is slidable and partially placed outside the cylinder body, and its sliding track sequentially passes through a part of the first connecting channel and a part of the second connecting channel, and the plunger is provided with a blocking portion for blocking the connecting channel;

[0030] By sliding the plunger, the blocking portion blocks part of the first connecting channel or part of the second connecting channel, thereby achieving flow interruption in the first connecting channel and unobstructed flow in the second connecting channel or unobstructed flow in the first connecting channel and interruption in the second connecting channel.

[0031] As a further preferred solution, the plunger has a portion disposed in the second cavity of the cylinder, and the outer periphery of the portion has: a flange portion disposed around the plunger and having an outer edge abutting against an inner wall of the second cavity;

[0032] Furthermore, the side wall of the second cavity is provided with: an air guide port connected to the second air inlet on the cylinder body;

[0033] The position of the air guide port is determined according to the arrangement structure of the first connecting channel and the second connecting channel, so that when the second cavity is inflated from the second air inlet through the air guide port, the flange portion can be pushed to move and the plunger can be driven to move to the blocking portion to block the second connecting channel.

[0034] The cloth clamping assembly comprises a plurality of cloth clamping devices as described in any of the above schemes, and the second air inlet in each cloth clamping device is connected to an air supply pipeline.

[0035] An embroidery machine comprising the cloth clamping device described in any of the above schemes;

[0036] Or, it includes the cloth clamping assembly described in any of the above solutions.

[0037] The main beneficial effects of the above technical solution are:

[0038] By adopting the cloth clamping device in the above technical solution, workers only need to place the cloth in the accommodating space formed between the cloth clamping block and the clamping plate as required, and the cylinder assembly can be used to drive the piston rod to clamp / release the cloth. In this way, on the one hand, there is no need to manually operate the cloth clamp to clamp the cloth, thereby saving labor; on the other hand, the cylinder assembly can provide a more stable clamping force for the cloth by only setting the moving position of the piston rod in the cylinder assembly according to the thickness of the cloth, so as to stably clamp the cloth.

[0039] At the same time, according to the movability of the clamping plate, there are a clamping part and a docking part that can be plugged into each other, so that when the clamping plate and the cloth clamping block clamp the cloth together, on the one hand, the clamping area of ​​the cloth can be increased and the clamping effect of the cloth can be improved; on the other hand, the cloth can be clamped in a curved state to increase the difficulty of the cloth escaping from the clamping and improve the stability of the clamping effect.

[0040] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The utility model is further described below in conjunction with the accompanying drawings:

[0042] Figure 1 It is an overall schematic diagram of the fabric clamping device.

[0043] Figure 2 It is a partial structural schematic diagram of the cloth clamping device.

[0044] Figure 3 It is a front view schematic diagram of the cloth clamping device.

[0045] Figure 4 This is a schematic diagram of the action of the cloth clamping device when clamping the cloth.

[0046] Figure 5 It is a schematic cross-sectional view of the cylinder structure.

[0047] Figure 6 It is a cross-sectional schematic diagram of the cylinder assembly when the piston rod is extended.

[0048] Figure 7 It is a cross-sectional schematic diagram of the cylinder assembly when the piston rod is retracted.

[0049] Figure 8 This is a schematic cross-sectional view of the cylinder assembly when the second air inlet is ventilated.

[0050] As shown in the figure: sidewall-1, mounting body-1a, connecting arm-1b, mounting seat-1c, guide groove-1c.1, limiting plate-1c.2, clamping block-1.1, docking part-1.11, material trough-1.2;

[0051] Cylinder assembly-2, piston rod-2.1, piston member-2.11, cylinder body-2.2, first cavity-2.21, extending push cavity-2.21a, retracting push cavity-2.21b, first air inlet-2.22, second cavity-2.23, air guide port-2.23a, second air inlet-2.24, third cavity-2.25, first partition-2.251, first partition channel-2.251a, second partition-2.252, second partition channel-2.252a, air inlet cavity-2.25a, ​​first air outlet cavity-2.25b, second air outlet cavity-2.25c, first air flow channel-2.26, second air flow channel-2.27, plunger member-2.3, blocking portion-2.31, flange portion-2.32;

[0052] Moving seat-3, cloth clamping seat-4, cloth clamping member-5, material clamping plate-5.1, clamping part-5.11, torsion spring-6, rotating shaft-7. DETAILED DESCRIPTION

[0053] The present invention is specifically described below with reference to the embodiments:

[0054] Embodiment 1:

[0055] Fabric clamping device, such as the attached Figure 1 To Attachment Figure 4 As shown, it includes a sidewall 1 extending transversely, and a card cloth block 1.1 protruding upward is arranged on the sidewall 1. Moreover, a cloth clamping piece 5 extending in the extending direction of the sidewall 1 is arranged at intervals above the card cloth block 1.1, which covers and protects the card cloth block 1.1 from above, and one side of the cloth clamping piece 5 (for example, attached Figure 1 The left side of the middle cloth clamping member 5 has a clamping plate 5.1 which protrudes downward and is placed on one side of the cloth block 1.1. The clamping plate 5.1 is placed on one side of the cloth block 1.1 at intervals and forms a space for accommodating cloth between the clamping plate 5.1 and the cloth block 1.1.

[0056] At the same time, the sidewall 1 is also provided with a cylinder assembly 2, which is preferably a commonly used push rod cylinder, or can also refer to an electric push rod, push rod motor, etc. similar to the push rod cylinder, which can be used to drive the object to move telescopically. Figure 1 As shown, a mounting seat 1c is mounted on the sidewall 1, and a cylinder assembly 2 is fixed to the mounting seat 1c by, for example, screws. In addition, the cylinder assembly 2 has a piston rod 2.1 that can be preferably telescopically moved laterally and connected to the cloth clamping member 5, so as to drive the clamping plate 5.1 to approach / move away from the cloth clamping block 1.1 to clamp / release the cloth placed in the accommodating space.

[0057] In this way, the cylinder assembly 2 drives the piston rod 2.1 to extend and move, driving the clamping plate 5.1 to move away from the cloth block 1.1 to the position as shown in the figure. Figure 4 In the state shown in B, the accommodating space for the cloth between the clamping plate 5.1 and the cloth clamping block 1.1 is increased, and the corners of the cloth can be placed in the accommodating space to complete the placement of the cloth.

[0058] Subsequently, the cylinder assembly 2 drives the piston rod 2.1 to retract into the cylinder assembly 2, driving the clamping plate 5.1 to move close to the clamping cloth block 1.1 until the clamping plate 5.1 is close to the clamping cloth block 1.1. Figure 4 In the state shown in C, the accommodating space for the cloth between the clamping plate 5.1 and the cloth clamping block 1.1 is reduced, so that the cloth placed in the accommodating space can be clamped and fixed, thereby completing the clamping of the cloth.

[0059] Furthermore, a clamping portion 5.11 is provided on the side of the clamping plate 5.1 facing the cloth block 1.1; a docking portion 1.11 is provided on the side of the cloth block 1.1 facing the clamping portion 5.11, and the docking portion 1.11 is configured to be plugged with the clamping portion 5.11 when the clamping plate 5.1 moves with the piston rod 2.1 and approaches the cloth block 1.1.

[0060] The clamping part 5.11 in this embodiment is a protruding structure arranged on the clamping plate 5.1, and the docking part 1.11 in this embodiment is preferably a groove structure for the clamping part 5.11 to be inserted horizontally, and the groove is arranged toward the clamping part 5.11. When the clamping plate 5.1 and the cloth clamping block 1.1 clamp the cloth together, the clamping part 5.11 of the protruding structure can push part of the cloth into the docking part 1.11 of the groove structure, which, on the one hand, increases the clamping area of ​​the cloth and can improve the clamping effect of the cloth; on the other hand, the cloth is clamped in a curved shape (i.e., for example, an S-shaped bend) to increase the difficulty of the cloth escaping from the clamping and improve the stability of the clamping effect.

[0061] In the above solution, the cloth clamping member 5 can be fixedly connected to the piston rod 2.1 of the cylinder assembly 2, and the clamping portion 5.11 and the cloth clamping block 1.1 are arranged horizontally opposite to each other. At this time, the cloth clamping member 5 itself greatly interferes with the cloth placement action, resulting in the problem of difficulty in cloth placement.

[0062] Alternatively, the cloth clamping member 5 can be movably connected to the piston rod 2.1, so that the cloth clamping member 5 can be lifted when the cloth is placed (such as with the attached Figure 4 When the cloth clamping member 5 moves with the piston rod 2.1 to clamp the cloth, the cloth clamping member 5 can be driven to rotate until the clamping portion 5.11 and the cloth clamping block 1.1 are horizontally opposite to each other (as shown in the attached figure). Figure 4 As shown in B in the figure, the above-mentioned cloth clamping action is realized.

[0063] Therefore, in this embodiment, the piston rod 2.1 is preferably rotatably connected to the cloth clamping member 5.

[0064] Specifically, as attached Figure 2 , Attachment Figure 4 As shown, in this embodiment, the piston rod 2.1 is connected to the cloth clamping member 5 through the moving seat 3 and the cloth clamping seat 4 in sequence, wherein the moving seat 3 can be connected to the outer end of the piston rod 2.1 movably along with the piston rod 2.1, and the cloth clamping seat 4 is fixed to the cloth clamping member 5 by, for example, screws, and the cloth clamping seat 4 is rotatably connected to the moving seat 3. The cloth clamping seat 4 can drive the cloth clamping member 5 as shown in the attached figure. Figure 4 Rotate as shown in A and B.

[0065] Specifically, Figure 2 As shown, in this embodiment, a rotating shaft 7 extending in a transverse direction is rotatably connected to the movable seat 3 , and the cloth clamping seat 4 is rotatably connected to the rotating shaft 7 .

[0066] Furthermore, in order to move with the piston rod 2.1, when the clamping portion 5.11 of the clamping plate 5.1 is separated from the docking portion 1.11, the cloth clamping member 5 can be automatically lifted to facilitate the removal of the cloth.

[0067] In this embodiment, as shown in the attached Figure 2 and attached Figure 3 As shown, an elastic support member is provided on the movable seat 3, which has a portion extending from the movable seat 3 and abutting against the lower end surface of the cloth clamping seat 4; so as to provide elastic support for the cloth clamping seat 4 to drive the cloth clamping seat 4 to be lifted away from the cloth block 1.1.

[0068] At this time, when the cloth is not clamped and the piston rod 2.1 drives the clamping plate 5.1 away from the docking portion 1.11, under the action of the elastic support member, the cloth will Figure 4 As shown in A, the cloth clamping seat 4 and the cloth clamping rod 5 are lifted to facilitate positioning of a portion of the cloth in the accommodation space between the cloth clamping plate 5.1 and the cloth clamping block 1.1.

[0069] After the cloth is placed, the cloth clamping seat 4 or the cloth clamping rod 5 can be manually pressed downward to drive the cloth clamping member 5 to rotate until the clamping portion 5.11 and the cloth clamping block 1.1 are horizontally opposite (such as the attached Figure 4 Then, by controlling the cylinder assembly 2, the piston rod 2.1 of the cylinder assembly 2 is retracted to drive the clamping plate 5.1 of the cloth clamping rod 5 to move toward the cloth clamping block 1.1 (as shown in the attached figure). Figure 4 The fabric can be clamped and fixed in place for subsequent embroidery operations.

[0070] When the embroidery is completed, the cylinder assembly 2 is controlled to extend the piston rod 2.1 of the cylinder assembly 2 to drive the clamping plate 5.1 of the cloth clamping rod 5 to move away from the cloth clamping block 1.1 (to the extent as shown in the attached figure). Figure 4 As shown in B in the figure, under the action of the elastic support, the cloth clamping rod 5 will automatically rise (as shown in the figure). Figure 4 As shown in A in the figure, it is convenient for the subsequent removal of the fabric.

[0071] The above-mentioned elastic support member can be any elastic structure such as a spring. In the present embodiment, the elastic support member is preferably a torsion spring 6, which is mounted on a rotating shaft 7 inserted in the movable seat 3; and the torsion spring 6 has a part that abuts downward against the movable seat 3, and another part that abuts upward against the lower end surface of the cloth clamping seat 4, so as to provide elastic support for the cloth clamping seat 4.

[0072] Furthermore, the rib 1 may be provided with a guide groove 1c.1 with the notch facing upward and extending in the telescopic movement direction of the piston rod 2.1; the moving seat 3 is adapted to be slidably installed in the guide groove 1c.1 to guide the movement of the moving seat 3.

[0073] Specifically, the guide groove 1c.1 in this embodiment is provided on the mounting seat 1c, the lower end of the movable seat 3 is slidably installed in the guide groove 1c.1 of the mounting seat 1c, and the upper end passes through the guide groove 1c.1 upward and is rotatably connected to the cloth clamping seat 4. The mounting seat 1c is provided with a limit plate 1c.2 located above part of the movable seat 3 to prevent the movable seat 3 from detaching upward from the mounting seat 1c, and the limit plate 1c.2 is preferably fixed to the mounting seat 1c by screws.

[0074] Furthermore, the retaining edge 1 in this embodiment includes a mounting body 1a, and a connecting arm 1b protrudingly arranged on one side surface of the mounting body 1a; the cloth clamping block 1.1 is protruding upwardly on the connecting arm 1b, and the interval between the connecting arm 1b and the mounting body 1a forms a material receiving groove 1.2 with a notch facing upward for accommodating part of the cloth that is not clamped.

[0075] When the cloth is clamped, the edge of the cloth can be accommodated in the material receiving groove 1.2, thereby avoiding interference with the rotation of the cloth clamping seat 4 and the cloth clamping rod 5.

[0076] Embodiment 2:

[0077] A cloth clamping device based on any one of the schemes in Embodiment 1, and the cylinder assembly 2 therein is optimized and improved.

[0078] In this embodiment, as shown in the attached Figure 5 To Attachment Figure 8As shown, the cylinder assembly 2 includes a cylinder body 2.2, the inner end of the piston rod 2.1 is placed in the first cavity 2.21 in the cylinder body 2.2 through the outer shell of the cylinder body 2.2, and a piston member 2.11 is fixedly connected to the inner end of the piston rod 2.1, the outer edge of which abuts against the first cavity 2.21; the piston member 2.11 divides the first cavity 2.21 into an extension push cavity 2.21a and a retraction push cavity 2.21b, and the direction from the extension push cavity 2.21a to the retraction push cavity 2.21b is the extension direction of the piston rod 2.1.

[0079] Among them, the extending pushing chamber 2.21a is connected with the first air inlet 2.22 on the cylinder body 2.2 through the first connecting channel; the retracting pushing chamber 2.21b is connected with the first air inlet 2.22 on the cylinder body 2.2 through the second connecting channel; and a slidable plunger 2.3 partially placed outside the cylinder body 2.2 is also inserted in the cylinder body 2.2, and the sliding trajectory of the plunger 2.3 sequentially passes through a part of the first connecting channel and a part of the second connecting channel, and a blocking portion 2.31 for blocking the connecting channel is provided on the plunger 2.3.

[0080] Specifically, in the present embodiment, the cylinder body 2.2 also includes a third cavity 2.25 separated from the first cavity 2.21, and the third cavity 2.25 is provided with a first partition 2.251 and a second partition 2.252 separated in the sliding direction of the plunger 2.3, and the two partitions divide the third cavity 2.25 into a first air outlet cavity 2.25b, an air inlet cavity 2.25a, ​​and a second air outlet cavity 2.25c arranged in sequence in the sliding direction of the plunger 2.3.

[0081] Among them, the air inlet chamber 2.25a is connected to the first air inlet 2.22, the first air outlet chamber 2.25b is connected to the retracting push chamber 2.21b through the first air flow channel 2.26 in the cylinder body 2.2, and the second air outlet chamber 2.25c is connected to the extending push chamber 2.21a through the second air flow channel 2.27 in the cylinder body 2.2.

[0082] The first partition 2.251 is provided with a first partition channel 2.251a with a through hole structure for the plunger 2.3 to be inserted and slid. At this time, the air inlet cavity 2.25a, ​​the first partition channel 2.251a, the first air outlet cavity 2.25b and the first air flow channel 2.26 together form the above-mentioned second connecting channel.

[0083] At the same time, the second partition 2.252 is provided with a second partition channel 2.252a with a through hole structure for the plunger 2.3 to be inserted and slid. At this time, the air inlet cavity 2.25a, ​​the second partition channel 2.252a, the second air outlet cavity 2.25c and the second air flow channel 2.27 together form the above-mentioned first connecting channel.

[0084] In this embodiment, the first partition channel 2.251a and the second partition channel 2.252a are preferably arranged opposite to each other, and the apertures of the first partition channel 2.251a and the second partition channel 2.252a are both larger than the outer diameter of the plunger 2.3 and smaller than or equal to the outer diameter of the blocking portion 2.31 on the plunger 2.3. The blocking portion 2.31 can be placed between the first partition channel 2.251a and the second partition channel 2.252a.

[0085] Thus, when, for example, Figure 6 As shown in the attached Figure 6 As shown by the solid arrow, the plunger 2.3 is pushed, so that the plunger 2.3 slides until the blocking portion 2.31 thereon is placed in the first partition channel 2.251a, and the blocking portion 2.31 is blocked in part of the second connecting channel, so that the first connecting channel is unblocked and the second connecting channel is cut off. At this time, by charging air into the cylinder 2.2 from the first air inlet 2.22, the cylinder 2.2 can be operated as shown in the attached figure. Figure 6 As shown by the dotted arrow, gas is filled into the extension pushing chamber 2.21a to push the piston member 2.11 to move, thereby driving the piston rod 2.1 to extend out of the cylinder body 2.2.

[0086] For example, Figure 7 As shown in the attached Figure 7 As shown by the arrow in the figure, the plunger 2.3 is pulled outward, so that the plunger 2.3 slides until the blocking portion 2.31 on it is placed in the second partition channel 2.252a, and the blocking portion 2.31 blocks part of the first connecting channel, so that the first connecting channel is cut off and the second connecting channel is unblocked. At this time, by charging air into the cylinder body 2.2 from the first air inlet 2.22, the cylinder body 2.2 can be opened as shown in the figure. Figure 7 As shown by the dotted arrow, gas is filled into the retraction push chamber 2.21b to push the piston member 2.11 to move, thereby driving the piston rod 2.1 to retract into the cylinder body 2.2.

[0087] That is, it is only necessary to set a first air inlet 2.22 for air intake on the cylinder body 2.2, and to change the opening / closing state of the first connecting channel and the second connecting channel by pulling the plunger 2.3, so as to adapt the cloth clamping action in the first embodiment to drive the piston rod 2.1 to move telescopically.

[0088] Further, on the basis of the above, considering that before the cloth is clamped, it is necessary to drive the piston rod 2.1 to extend out of the cylinder body 2.2, in order to automatically drive the plunger 2.3 to move to the corresponding position. Figure 8As shown, the cylinder body 2.2 has a second cavity 2.23 spaced apart from the third cavity 2.25, and the second cavity 2.23 is preferably spaced apart from the third cavity 2.25 in the sliding direction of the plunger 2.3. The plunger 2.3 has a portion placed in the second cavity 2.23 in the cylinder body 2.2, and the outer periphery of the portion has a flange portion 2.32 arranged around the plunger 2.3 and the outer edge of which abuts against the inner wall of the second cavity 2.23; and an air guide port 2.23a connected to the second air inlet 2.24 on the cylinder body 2.2 is arranged on the side wall of the second cavity 2.23; the position of the air guide port 2.23a is determined according to the arrangement structure of the first connecting channel and the second connecting channel, so as to achieve the following Figure 8 As shown in FIG. 2 , air is inflated into the second cavity 2.23 from the second air inlet 2.24 through the air guide port 2.23a (see FIG. 2 ). Figure 8 When the second connecting channel is inflated as indicated by the arrow in the dotted line, the flange portion 2.32 can be pushed to move, and the plunger 2.3 can be driven to move to the portion where the blocking portion 2.31 blocks the second connecting channel.

[0089] That is, before the cloth is clamped, by inflating the second air inlet 2.24, the plunger 2.3 can be automatically driven to move to the blocking portion 2.31 to block the second connecting channel, so that the first connecting channel is unobstructed and the second connecting channel is cut off. At this time, inflating the first air inlet 2.22 can drive the piston rod 2.1 to extend out of the cylinder body 2.2, thereby moving the clamping plate 5.1 away from the cloth clamping block 1.1, thereby facilitating the placement of the cloth.

[0090] After the second air inlet 2.24 is inflated, the second air inlet 2.24 can remain in a non-inflated state, which is convenient for manual pulling of the plunger 2.3. Similarly, after the first air inlet 2.22 is inflated, it can also remain in a non-inflated state. Further, on the basis of the above, the first cavity 2.21, the second cavity 2.23 and the third cavity 2.25 can be provided with a pressure relief valve according to actual needs to avoid the appearance of incompressible high-pressure gas in the cavity and hindering the telescopic movement of the piston rod 2.1 and the telescopic movement of the plunger 2.3. The specific setting of the pressure relief valve is a commonly used technical means in this field and will not be described in detail here.

[0091] Embodiment three:

[0092] The cloth clamping assembly comprises the cloth clamping device described in any one of the schemes in the second embodiment, and the second air inlet 2.24 in each cloth clamping device is connected to an air supply pipeline.

[0093] In this way, by inflating the air supply pipeline, the plunger members 2.3 in all the cloth clamping devices can be synchronously driven to move to the positions as shown in the attached figure. Figure 6In the state shown, it is only necessary to inflate the first air inlet 2.22 in each cloth clamping device to drive the piston rod 2.1 in all cloth clamping devices to extend, thereby moving the clamping plate 5.1 away from the cloth clamping block 1.1, making it easier to place the cloth. Figure 4 Then, according to the state of the cloth placed in each cloth clamping device, the plunger 2.3 is pulled out, and the cloth can be clamped one by one as described above, and finally all the cloth clamping devices can clamp the cloth together.

[0094] Embodiment 4:

[0095] An embroidery machine comprises the cloth clamping device of the first embodiment or any one of the second embodiments, or comprises the cloth clamping assembly of any one of the third embodiments.

[0096] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0097] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. The cloth clamping device is characterized in that: include: A side guard (1) having a cloth block (1.1) protruding upward; A cloth clamping piece (5) disposed above the cloth block (1.1), comprising: a material clamping plate (5.1) protruding downward and disposed on one side of the cloth block (1.1); A space for accommodating cloth is formed between the cloth clamping block (1.1) and the clamping plate (5.1); The sidewall (1) is also provided with a cylinder assembly (2), which has a piston rod (2.1) that can be telescopically moved and is connected to the cloth clamping member (5), so as to: drive the material clamping plate (5.1) to approach / move away from the cloth clamping block (1.1) to apply a clamping action / release a clamping action on the cloth placed in the accommodating space; Furthermore, a clamping portion (5.11) is provided on the side of the clamping plate (5.1) facing the clamping cloth block (1.1); A docking portion (1.11) is provided on the side of the card block (1.1) facing the clamping portion (5.11), and is configured to be plugged into the clamping portion (5.11) when the clamping plate (5.1) moves with the piston rod (2.1) and approaches the card block (1.1).

2. The cloth clamping device according to claim 1, characterized in that: The piston rod (2.1) is connected to the cloth clamping member (5) via a movable seat (3) and a cloth clamping seat (4) in sequence; The movable seat (3) is movably connected to the outer end of the piston rod (2.1) along with the piston rod (2.1), the cloth clamping seat (4) is fixed to the cloth clamping member (5), and the cloth clamping seat (4) is rotatably connected to the movable seat (3).

3. The cloth clamping device according to claim 2, characterized in that: The movable seat (3) is provided with an elastic support member, which has a portion extending from the movable seat (3) and abutting against the lower end surface of the cloth clamping seat (4); The cloth clamping seat (4) can be provided with elastic support that drives the cloth clamping seat (4) to be lifted away from the cloth clamping block (1.1).

4. The cloth clamping device according to claim 3, characterized in that: The elastic support member is a torsion spring (6), and the torsion spring (6) is sleeved on a rotating shaft (7) inserted in the movable seat (3); Furthermore, the torsion spring (6) has a portion that abuts downward against the movable seat (3), and another portion that abuts upward against the lower end surface of the cloth clamping seat (4), so as to provide the elastic support for the cloth clamping seat (4).

5. The cloth clamping device according to claim 2, characterized in that: The rib (1) is provided with: a guide groove (1c.1) with a notch facing upward and extending in the telescopic movement direction of the piston rod (2.1); The movable seat (3) is adapted to be slidably installed in the guide groove (1c.1).

6. The cloth clamping device according to claim 5, characterized in that: The retaining edge (1) comprises a mounting body (1a) and a connecting arm (1b) protrudingly arranged on one side surface of the mounting body (1a); The cloth clamping block (1.1) is arranged on the connecting arm (1b), and the interval between the connecting arm (1b) and the mounting body (1a) forms a material receiving groove (1.2) with a notch facing upwards for receiving a portion of the cloth that is not clamped.

7. The cloth clamping device according to any one of claims 1 to 6, characterized in that: The cylinder assembly (2) comprises a cylinder body (2.2); the inner end of the piston rod (2.1) passes through the outer shell of the cylinder body (2.2) and is placed in a first cavity (2.21) in the cylinder body (2.2); and the inner end of the piston rod (2.1) is fixedly connected to a piston member (2.11) whose outer edge abuts against the first cavity (2.21); The piston member (2.11) divides the first cavity (2.21) into an extension push cavity (2.21a) and a retraction push cavity (2.21b), and the direction from the extension push cavity (2.21a) to the retraction push cavity (2.21b) is the extension direction of the piston rod (2.1); The extension pushing chamber (2.21a) is connected to the first air inlet (2.22) on the cylinder body (2.2) via a first connecting channel; The retracting pushing chamber (2.21b) is connected to the first air inlet (2.22) on the cylinder body (2.2) via a second connecting channel; The cylinder body (2.2) is also provided with a slidable plunger (2.3) which is partially disposed outside the cylinder body (2.2), and whose sliding track sequentially passes through a portion of the first connecting channel and a portion of the second connecting channel, and the plunger (2.3) is provided with a blocking portion (2.31) for blocking the connecting channel; The blocking portion (2.31) can be made to block part of the first connecting channel or part of the second connecting channel by sliding the plunger (2.3), thereby achieving flow interruption in the first connecting channel and unblocking in the second connecting channel, or flow interruption in the first connecting channel and unblocking in the second connecting channel.

8. The cloth clamping device according to claim 7, characterized in that: The plunger (2.3) has a portion disposed in the second cavity (2.23) in the cylinder (2.2), the outer periphery of the portion having: a flange portion (2.32) disposed around the plunger (2.3) and with an outer edge abutting against an inner wall of the second cavity (2.23); Furthermore, the side wall of the second cavity (2.23) is provided with: an air guide port (2.23a) connected to the second air inlet (2.24) on the cylinder body (2.2); The position of the air guide port (2.23a) is determined according to the arrangement structure of the first connecting channel and the second connecting channel, so that when the second cavity (2.23) is inflated from the second air inlet (2.24) through the air guide port (2.23a), the flange portion (2.32) can be pushed to move, and the plunger member (2.3) can be driven to move to the blocking portion (2.31) to block the second connecting channel.

9. Fabric clamping assembly, characterized in that: It comprises a plurality of cloth clamping devices as claimed in claim 8, and the second air inlet (2.24) in each cloth clamping device is connected to an air supply pipeline.

10. Embroidery machine, characterized in that: A cloth clamping device comprising any one of claims 1 to 8; Or, comprising the cloth clamping assembly as claimed in claim 9.

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