Edge blocking device

Abstract

The utility model discloses an edge blocking device which comprises a body, the body is provided with a bearing portion, and the bearing portion is provided with an abutting face extending in the first direction and suitable for abutting against a table top. The surface, deviating from the abutting surface, of the bearing part is a first placing surface for placing a fabric cutting piece; the clamping part is connected with the bearing part into a whole and is provided with a clamping structure, and the clamping structure is arranged on the side wall in the second direction, so that the body is suitable for sliding in the direction perpendicular to the first direction, and the body is prevented from being separated from the table top in the direction perpendicular to the second direction; and the flange part is connected with the bearing part into a whole and provided with a first blocking face, and the first blocking face extends in the third direction perpendicular to the first direction and abuts against the edge of the thin material cutting piece so as to block the thin material cutting piece from deviating in the direction perpendicular to the first direction. The utility model provides an edge blocking device, which is used for positioning a seam allowance when fabric cutting pieces are spliced and sewn, and effectively solves the quality problems of non-uniform seam allowance size control, seam cracking and the like.

Description

Technical Field

[0001] This utility model relates to the field of garment manufacturing equipment technology, specifically to an edge guard. Background Technology

[0002] Overlock machines are indispensable tools in garment production, frequently used in various joining and sewing processes. While renowned for their high sewing speed, overlock machines also present the challenge of precisely controlling the seam allowance. The seam allowance, the width of the edge left when sewing fabric pieces together, is crucial for the garment's size and appearance. However, due to various factors during operation, such as worker skill and equipment stability, the seam allowance is often difficult to achieve ideal results. Specifically, overcutting the seam allowance leads to a smaller garment size, affecting comfort and appearance; undercutting results in a larger garment size, failing to meet design requirements; and sometimes, cutting only one layer of fabric can cause seam bursts, severely impacting product quality and durability. Utility Model Content

[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems in the background art and provide an edge guard to position the stop when sewing fabric pieces together, effectively solving quality problems such as uneven control of the stop size and bursting.

[0004] To achieve the above objectives, the various embodiments of this utility model adopt the following technical solutions, but are not limited to the following solutions:

[0005] The first technical solution relates to an edge guard, which is installed on the operating table of an overlock machine for positioning the stop when sewing fabric pieces together. The fabric pieces include thin fabric pieces, thick fabric pieces, and double-layer fabric pieces, and the fabric pieces move along a first direction. The operating table has a table surface extending along the first direction and a side wall that bends along a second direction to the table surface, the second direction intersecting the first direction. The edge guard includes a body, which has: a support part having an abutment surface extending along the first direction, suitable for abutting against the table surface; the side of the support part away from the abutment surface is a first placement surface for placing the fabric pieces; a locking part integrated with the support part and having a locking structure installed along the second direction on the side wall to allow the body to slide along the perpendicular first direction and prevent the body from detaching from the table surface along the perpendicular second direction; and an edge guard part integrated with the support part, having a first blocking surface extending along a third direction perpendicular to the first direction and abutting against the edge of the fabric pieces to prevent the fabric pieces from shifting along the perpendicular first direction.

[0006] The second technical solution is based on the first technical solution, wherein the abutment body is provided with a prying part, the abutment abutment prying part is located above the bearing part and fixed to the edge part, and the abutment abutment prying part is provided with a pressing surface that is parallel to and opposite to the first placement surface of the abutment to limit the height of the fabric piece along the third direction.

[0007] The third technical solution is based on the second technical solution, wherein the abutment edge portion is provided with a second blocking surface, the abutment edge portion is divided by the abutment paddle portion to form a first blocking surface and a second blocking surface, the abutment paddle portion is provided with a second placement surface opposite to the abutment pressing surface, and the upper and lower layers of the double-layer fabric pieces are placed on the first and second placement surfaces of the abutment surface, respectively.

[0008] The fourth technical solution is based on the first technical solution, wherein the height of the first blocking surface of the abutment surface along the third direction is slightly greater than the thickness of the thin material sheet.

[0009] The fifth technical solution is based on the second technical solution, wherein, in the structure with the pry plate, the height of the first blocking surface of the abutment surface along the third direction is slightly greater than the thickness of the thick material sheet.

[0010] The sixth technical solution is based on the third technical solution, wherein, in the structure configured with a prying part and a second blocking surface, the height of the first blocking surface and the second blocking surface along the third direction is slightly greater than the thickness of the upper and lower layers of the double-layer fabric cut piece, respectively.

[0011] The seventh technical solution is based on the sixth technical solution, wherein the abutment surface locking structure is a locking groove, and the abutment surface locking groove is located at the end of the locking part away from the bearing part to lock the side wall of the operating table.

[0012] The eighth technical solution is based on any one of the first to seventh technical solutions, wherein the abutment surface body is made of stainless steel.

[0013] The ninth technical solution is based on the eighth technical solution. In this solution, a marking line is provided on the side of the abutment surface away from the edge of the abutment surface bearing part, which is used to observe whether the abutment surface body shifts during use.

[0014] The tenth technical solution is based on the ninth technical solution, in which the marking line on the contact surface is applied with masking tape.

[0015] As can be seen from the above description of the various embodiments of the present utility model, compared with the prior art, the various embodiments of the present utility model have the following beneficial effects:

[0016] In the first technical solution and related embodiments, the edge guard is specifically designed for the overlock machine operating table and can position the seam allowance during the joining and sewing of fabric pieces. This function is achieved primarily through the coordinated operation of three parts: a support section, a snap-fit ​​section, and an edge guard. The support section provides a stable support surface, ensuring the fabric pieces are placed stably on the operating table. The snap-fit ​​section, through its snap-fit ​​structure, allows the edge guard to be securely installed on the side wall of the operating table, while allowing it to slide flexibly along the fabric piece's movement direction (first direction) according to the size of the seam allowance, effectively preventing it from detaching from the table surface in a direction perpendicular to the side wall (second direction), thus enhancing stability and convenience. The first blocking surface of the edge guard is used to closely adhere to the edge of the fabric piece, effectively preventing any possible shifting of the fabric piece during movement, ensuring the neatness of the edge and cutting accuracy.

[0017] In the second technical solution and related embodiments, a prying section is added to the original edge guard. The prying section is located above the support section and is fixedly connected to the edge guard, forming an additional control layer. This design is specifically optimized for thick fabric pieces. The pressing surface of the prying section is parallel and opposite to the first placement surface of the support section, effectively limiting the height of the thick fabric piece in the direction perpendicular to the fabric movement direction (third direction). Thus, during the overlock machine operation, the thick fabric piece can be more stably controlled and positioned, reducing instability or offset problems caused by the large thickness of the fabric piece.

[0018] In the third technical solution and related embodiments, based on the original design, the edge guard portion is divided by the pry bar to form a first blocking surface and a second blocking surface. This design expands the applicability and function of the edge guard. In particular, the second placement surface added to the pry bar portion opposite to the pressing surface, together with the first placement surface of the bearing portion, constitutes the support structure for the double-layer fabric piece. In this way, the edge guard can now simultaneously and stably support and position the upper and lower layers of the double-layer fabric piece, ensuring that they move synchronously and are aligned during the cutting process. Furthermore, the first and second blocking surfaces respectively provide edge blocking for the upper and lower layers of the double-layer fabric piece, effectively preventing the piece from shifting during movement and improving the cutting accuracy and stability.

[0019] In the fourth technical solution and related embodiments, when the height of the first blocking surface along a third direction (i.e., perpendicular to the direction of fabric piece movement) is slightly greater than the thickness of the thin fabric piece, it ensures that the first blocking surface can closely and appropriately conform to the edge of the thin fabric piece. Considering that the space around the presser foot attachment of the overlock machine is usually relatively limited, this design ensures functionality while minimizing the impact on the presser foot and the operating space of the equipment.

[0020] In the fifth technical solution and related embodiments, the height of the first blocking surface is slightly greater than the thickness of the cut piece, which provides the necessary blocking effect to prevent the cut piece from shifting during movement. At the same time, since the first placement surface and the pressing surface of the prying part together restrict the thick cut piece, no frictional force is generated that hinders the movement of the cut piece, allowing the cut piece to move smoothly in the predetermined direction while being moderately restricted.

[0021] In the sixth technical solution and related embodiments, by making the heights of the first and second blocking surfaces slightly greater than the thicknesses of the upper and lower layers of the double-layer fabric piece, the edge guard can closely and appropriately conform to the edges of the upper and lower layers of the piece. This design not only provides the necessary blocking effect to prevent the piece from shifting during movement, but also ensures the synchronicity and stability of the upper and lower layers of the piece during the cutting process.

[0022] In the seventh technical solution and related embodiments, the slot not only enables the edge guard body to slide on the operating table along the direction perpendicular to the fabric piece movement direction (i.e., the vertical direction of the first direction) to adapt to the positioning requirements of different pieces, but also effectively prevents the edge guard body from leaving the operating table along the direction perpendicular to the side wall (i.e., the vertical direction of the second direction).

[0023] In the eighth technical solution and related embodiments, the body is made of stainless steel, which has good corrosion resistance and wear resistance, and can ensure that the edge guard maintains stable performance during long-term use.

[0024] In the ninth technical solution and related embodiments, the marking line is used to observe whether the body has shifted during long-term use, so as to ensure processing accuracy.

[0025] In the tenth technical solution and related embodiments, the marking line is attached with masking tape, which is convenient for replacement because there is no adhesive residue after the masking tape is removed. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the thin material cutting edge guard structure in Example 1;

[0028] Figure 2 This is a schematic diagram of the thick material cutting edge guard structure in Example 2;

[0029] Figure 3 This is a schematic diagram of the double-layer fabric cutter edge guard structure in Example 3.

[0030] Explanation of key figure labels:

[0031] Bearing part 1; latching part 2; edge part 3; lever part 4; abutting surface 10; first placement surface 11; slot 20; first blocking surface 30; second blocking surface 31; pressing surface 40; second placement surface 41. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0033] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.

[0034] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of this utility model.

[0035] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.

[0036] In the claims, description and accompanying drawings of this utility model, the terms "comprising", "having", and variations thereof are used to mean "including but not limited to".

[0037] In this embodiment, for the sake of reference to the accompanying drawings and for ease of explanation, the first direction X is defined as the direction from right to left, the second direction Y is the downward direction intersecting with X, and the third direction Z is the upward direction. However, this does not mean that the directional limitation of this patent is imposed.

[0038] See Figures 1 to 3 An edge guard is installed on the operating table of an overlock machine for positioning the seam stop during the joining and sewing of fabric pieces. The fabric pieces include thin pieces, thick pieces, and double-layered pieces, and move along a first direction. The operating table has a table surface extending along the first direction and a sidewall that bends along a second direction, intersecting the first direction. The edge guard is configured in three embodiments according to the type and thickness of the fabric pieces.

[0039] Example 1

[0040] like Figure 1 As shown, a side guard includes a body, which has a supporting part 1, a snap-fit ​​part 2 and a side guard part 3.

[0041] In this embodiment, the fabric piece is a thin fabric piece. Specifically, the thin fabric piece is a light and thin fabric for spring and summer clothing styles. The two layers of fabric are sewn together close to the edge 3 for production.

[0042] The support part 1 has a contact surface 10 extending in a first direction, suitable for abutting against a table surface. Specifically, the contact surface 10 is in close contact with the table surface of the overlock machine operating table, ensuring that the edge guard is stably placed on the table surface. The side of the support part 1 opposite to the contact surface 10 is a first placement surface 11 for placing fabric pieces. The first placement surface 11 is flat and smooth, designed specifically for placing fabric pieces, and can adapt to various fabric types.

[0043] The engaging part 2, which is integrally connected to the supporting part 1, is provided with an engaging structure. This engaging structure is mounted on the side wall along the second direction to allow the body to slide perpendicular to the first direction and prevent the body from detaching from the worktable along the second direction. Specifically, the engaging structure is a slot 20 located at the end of the engaging part 2 furthest from the supporting part 1. Its shape and size are precisely designed to ensure a secure engagement with the side wall of the worktable. The slot 20 not only allows the edge guard body to slide on the worktable along a direction perpendicular to the fabric piece movement direction (i.e., perpendicular to the first direction), adapting to the positioning needs of different pieces, but also effectively prevents the edge guard body from detaching from the worktable along a direction perpendicular to the side wall (i.e., perpendicular to the second direction).

[0044] The edge-blocking part 3, which is integrally connected to the supporting part 1, has a first blocking surface 30. The first blocking surface 30 extends along a third direction perpendicular to the first direction and abuts against the edge of the fabric piece to prevent the fabric piece from shifting along a direction perpendicular to its movement. The main function of the first blocking surface 30 is to closely adhere to the edge of the thin fabric piece, preventing it from shifting perpendicular to the movement direction during the overlocking process through physical blocking. Furthermore, the height of the first blocking surface 30 can be flexibly designed according to the thickness of the fabric piece to accommodate fabric pieces of different thicknesses. In this embodiment, the height of the first blocking surface 30 along the third direction is slightly greater than the thickness of the thin fabric piece, ensuring that the first blocking surface 30 can closely and appropriately conform to the edge of the fabric piece. Considering that the space around the presser foot attachment of the overlocking machine is usually limited, this design ensures functionality while minimizing the impact on the presser foot and the operating space of the equipment.

[0045] The body is made of stainless steel, which has good corrosion resistance and wear resistance, ensuring that the edge guard maintains stable performance during long-term use.

[0046] To facilitate observation of whether the edge guard has shifted during use, a marking line is provided on the side of the table surface located on the support part 1 away from the edge guard part 3. The marking line is affixed with masking tape, which is not only easy to observe and identify, but also easy to replace and maintain, because the masking tape leaves no residue after being removed.

[0047] In this embodiment, the edge guard is specifically designed for the overlock machine operating table, enabling it to position the seam allowance during the joining and sewing of fabric pieces. This function is achieved primarily through the coordinated operation of three parts: a support part 1, a snap-fit ​​part 2, and an edge guard part 3. The support part 1 provides a stable support surface, ensuring the fabric pieces are placed stably on the operating table. The snap-fit ​​part 2, through its snap-fit ​​structure, allows the edge guard to be securely mounted on the side wall of the operating table, while allowing it to slide flexibly along the fabric piece's movement direction (first direction) according to the size of the seam allowance, effectively preventing it from detaching from the table surface in a direction perpendicular to the side wall (second direction), thus enhancing stability and convenience. The first blocking surface 30 of the edge guard part 3 is used to closely adhere to the edge of the fabric piece, effectively preventing any possible shifting of the fabric piece during movement, ensuring the neatness of the edge and cutting accuracy.

[0048] Example 2

[0049] like Figure 2 Based on Embodiment 1, the main body is further provided with a prying section 4. In this embodiment, the fabric piece is a thick fabric piece. Specifically, the thick fabric piece is used for clothing styles with thicker fabrics in autumn and winter seasons. The prying section 4 and the supporting section 1 clamp the fabric to control the fabric thickness within a certain height, which facilitates production.

[0050] The pusher section 4 is located above the support section 1 and fixedly connected to the edge guard section 3. The pusher section 4 has a pressing surface 40 that is parallel to and opposite to the first placement surface 11 to limit the height of the thick material piece along the third direction. The pusher section 4 is located above the support section 1 and is fixedly connected to the edge guard section 3, forming an additional control layer. The pressing surface 40 of the pusher section 4 is parallel to and opposite to the first placement surface 11 of the support section 1, which can effectively limit the height of the thick material piece in the direction perpendicular to the fabric movement direction (third direction). In this way, during the operation of the overlock machine, the thick material piece can be more stably controlled and positioned, reducing the problem of unstable movement or displacement caused by the large thickness of the piece.

[0051] Specifically, the height of the first blocking surface 30 along the third direction is slightly greater than the thickness of the thick material sheet. This design allows the edge guard to fit more closely and appropriately against the edge of the thick material sheet. This provides the necessary blocking effect to prevent the sheet from shifting during movement. At the same time, because the first placement surface 11 and the pressing surface 40 of the prying part 4 jointly restrict the thick material sheet without generating friction that hinders its movement, the sheet can still move smoothly along the predetermined direction while being moderately restricted.

[0052] Example 3

[0053] like Figure 3 As shown, based on Embodiment 2, the pry plate 4 is located in the middle of the edge guard 3. In this embodiment, the fabric piece is a double-layer fabric piece, which is used for some special processes or fabrics. The two layers of fabric need to be sewn separately.

[0054] The edge guard portion 3 is provided with a second blocking surface 31. The edge guard portion 3 is divided by the prying portion 4 to form a first blocking surface 30 and a second blocking surface 31. The prying portion 4 has a second placement surface 41 facing away from the pressing surface 40. The first placement surface 11 and the second placement surface 41 respectively place the upper and lower layers of the double-layer fabric piece. Based on the design of Embodiment 2, the edge guard portion 3 is divided by the prying portion 4 to form a first blocking surface 30 and a second blocking surface 31. This design expands the applicability and function of the edge guard. In particular, the second placement surface 41 added to the prying portion 4 facing away from the pressing surface 40, together with the first placement surface 11 of the bearing portion 1, constitutes the support structure for the double-layer fabric piece. In this way, the edge guard can now simultaneously and stably support and position the upper and lower layers of the double-layer fabric piece, ensuring that they move synchronously and are aligned during the cutting process. In addition, the first blocking surface 30 and the second blocking surface 31 are respectively used to block the upper and lower layers of the double-layer fabric piece, effectively preventing the piece from shifting during movement and improving the cutting accuracy and stability.

[0055] Specifically, the heights of the first blocking surface 30 and the second blocking surface 31 along a third direction are slightly greater than the thicknesses of the upper and lower layers of the double-layer fabric piece, respectively. This design is primarily to optimize the edge guard's ability to handle the double-layer fabric piece. At this point, the edge guard can closely and appropriately conform to the upper and lower edges of the piece. This design not only provides the necessary blocking effect to prevent the piece from shifting during movement, but also ensures the synchronicity and stability of the upper and lower layers of the piece during the cutting process.

[0056] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.

Claims

1. An edge guard, installed on the operating table of an overlock machine, for positioning the stop edge during the joining and sewing of fabric pieces, wherein the fabric pieces include thin fabric pieces, thick fabric pieces, and double-layer fabric pieces, and the fabric pieces move along a first direction; the operating table has a table surface extending along the first direction and a side wall bent along a second direction, the second direction intersecting the first direction; characterized in that, The edge guard includes a body, and the body is provided with: The support part (1) has an abutment surface (10) extending in a first direction, which is suitable for abutting against the table surface; the side of the support part (1) opposite to the abutment surface (10) is a first placement surface (11) for placing fabric pieces. The snap-fit ​​part (2) is integrated with the support part (1) and is provided with a snap-fit ​​structure. The snap-fit ​​structure is installed on the side wall along the second direction so that the body is adapted to slide along the vertical first direction and prevents the body from detaching from the table surface along the vertical second direction. The edge guard (3) is integrated with the support part (1) and has a first blocking surface (30). The first blocking surface (30) extends along a third direction perpendicular to the first direction and abuts against the edge of the fabric piece to prevent the fabric piece from shifting along the first direction.

2. The edge guard as described in claim 1, characterized in that, The main body is provided with a pusher part (4), which is located above the support part (1) and fixed to the edge part (3). The pusher part (4) is provided with a pressing surface (40) that is parallel to and opposite to the first placement surface (11) to limit the height of the fabric piece along the third direction.

3. The edge guard as described in claim 2, characterized in that, The edge guard (3) is provided with a second blocking surface (31). The edge guard (3) is divided by the pry plate (4) to form a first blocking surface (30) and a second blocking surface (31). The pry plate (4) is provided with a second placement surface (41) facing away from the pressing surface (40). The first placement surface (11) and the second placement surface (41) are respectively used to place the upper and lower layers of the double-layer fabric pieces.

4. The edge guard as described in claim 1, characterized in that, The height of the first blocking surface (30) along the third direction is slightly greater than the thickness of the thin material sheet.

5. A side guard as described in claim 2, characterized in that, In the structure with the paddle part (4), the height of the first blocking surface (30) along the third direction is slightly greater than the thickness of the thick material sheet.

6. A side guard as described in claim 3, characterized in that, In the structure configured with a pry bar (4) and a second blocking surface (31), the heights of the first blocking surface (30) and the second blocking surface (31) along the third direction are slightly greater than the thicknesses of the upper and lower layers of the double-layer fabric cut piece, respectively.

7. A side guard as described in claim 1, characterized in that, The snap-fit ​​structure is a snap-fit ​​groove (20), which is located at the end of the snap-fit ​​part (2) away from the bearing part (1) to snap-fit ​​the side wall of the operating table.

8. A side guard as described in any one of claims 1 to 7, characterized in that, The main body is made of stainless steel.

9. A side guard as described in claim 8, characterized in that, The platform is marked with a line on the side of the bearing part (1) away from the edge part (3) to observe whether the body is shifted during use.

10. A side guard as described in claim 9, characterized in that, The marking lines were applied with masking tape.

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