Horizontal rotation positioning mechanism for insertion strip guide-in piece, adjusting device and sewing machine

Abstract

The utility model discloses a horizontal rotation positioning mechanism for an insertion strip guide-in piece, an adjusting device and a sewing machine, the horizontal rotation positioning mechanism comprises a connecting piece, an indexing pin and a stopper screw, one end of the connecting piece can be directly or indirectly connected with the insertion strip guide-in piece, the connecting piece is provided with an upper indexing pin hole and a connecting hole, and the connecting hole is provided with a lower indexing pin hole. An upper indexing pin hole is formed in the lower portion of the connecting piece, the indexing pin is inserted into the upper indexing pin hole, the plug screw is inserted into the connecting hole, the connecting piece can horizontally rotate around the plug screw, a lower indexing pin hole corresponding to the upper indexing pin hole is further formed in the lower portion of the connecting piece, and the indexing pin can be inserted into the lower indexing pin hole to achieve positioning. The insertion strip guide-in piece is provided with the horizontal rotating and positioning mechanism, so that the insertion strip guide-in piece can be conveniently moved when not used, other clothes sewing operations on the table top of the sewing machine are not affected, and when the insertion strip guide-in piece is used for sewing, the insertion strip guide-in piece can be stably fixed on the table top of the sewing machine and does not rotate or shake; the sewing efficiency is improved, and the sewing effect becomes better.

Description

Technical Field

[0001] The utility model belongs to the technical fields of clothing, curtain, car seat cover processing, etc., and particularly relates to a horizontal rotation positioning mechanism, an adjusting device and a sewing machine for an inlay strip introducing part. Background Art

[0002] An inlay strip is a material used for decoration, mounting or connection. In the production of sewing products, the inlay strip is usually used to decorate clothes, bags, pillows, curtain, seat cover splicing, etc. It can be made of fillers such as cotton ropes, or can be a simple folded and ironed cloth strip. Usually, during the sewing process, when sandwiching a woven belt inlay strip, it is manually superimposed with the fabric to be inlaid and then placed under the sewing needle on the sewing machine table. The operator holds the woven belt inlay strip by hand and stitches while pulling it little by little; this method not only has low sewing work efficiency, but also the woven belt inlay strip sewn is prone to bending and skewing, thus affecting the overall aesthetic appearance of the sewn product. Therefore, some auxiliary tools have emerged. These tools usually have a guiding draw opening for threading the woven belt inlay strip. In this way, when sewing, it is not necessary to hold the woven belt inlay strip by hand and stitch while pulling it little by little, the work efficiency is improved, and the woven belt inlay strip sewn on the sewn product is not prone to bending and skewing, thus better maintaining the overall aesthetic appearance of the sewn product. In order to move these tools conveniently when the inlay strip auxiliary tool is not in use so as not to affect the sewing operation of other products to be sewn on the sewing machine table, the auxiliary device is set to be rotatable. When the auxiliary device is not in use, it is rotated to the end far away from the sewing needle opening of the sewing machine. However, due to the lack of a device for controlling rotation, it is easy to cause the auxiliary device to rotate and shake during the sewing process, resulting in low sewing efficiency and poor sewing effect. Content of the Utility Model

[0003] Aiming at the deficiencies existing in the prior art, the utility model provides a horizontal rotation positioning mechanism, an adjusting device and a sewing machine for an inlay strip introducing part. The specific technical solutions are as follows:

[0004] A horizontal rotation positioning mechanism for an inlay strip introducing part includes a connecting piece, a indexing pin and a set screw. One end of the connecting piece can be directly or indirectly connected to the inlay strip introducing part. The connecting piece has an upper indexing pin hole and a connecting hole. The indexing pin is inserted into the upper indexing pin hole, and the set screw is inserted into the connecting hole. The connecting piece can rotate horizontally around the set screw. A lower indexing pin hole corresponding to the upper indexing pin hole is also provided below the connecting piece. The indexing pin can be inserted into the lower indexing pin hole to achieve positioning. By setting a horizontal rotation positioning mechanism for the inlay strip introducing part, it can be conveniently moved when the inlay strip introducing part is not in use, so as not to affect other clothing sewing operations on the sewing machine table. When sewing with the inlay strip introducing part, the inlay strip introducing part can be stably fixed on the sewing machine table without rotating and shaking, the sewing efficiency is improved, and the sewing effect is optimized.

[0005] Further, it further includes an adjusting block. The upper surface of the adjusting block fits with the surface of the connecting member. The lower indexing pin hole is arranged on the adjusting block. The adjusting block is further provided with a connecting threaded hole, an arc hole and a positioning hole. The plug screw passes through the connecting hole and is inserted into the connecting threaded hole. The centers of the arc hole and the positioning hole are in the same position. The adjusting block can rotate with the positioning screw of the positioning hole as the axis. A fixing screw for fixing the adjusting block is arranged in the arc hole. During the installation process, since it is impossible to ensure that the guiding direction of the strip of the strip guiding member is absolutely accurate with respect to the sewing direction of the sewing machine, by providing the adjusting block, when there is a deviation between the direction of guiding the webbing strip by the strip guiding member and the sewing direction of the sewing machine, the adjusting block can be rotated to adjust the direction of the strip guiding member to make it consistent with the sewing direction of the sewing machine.

[0006] Furthermore, the adjusting block is further provided with a positioning post for locking the position where the upper indexing pin hole and the lower indexing pin hole are coaxial. When the material guiding assembly contacts the positioning post, the upper indexing pin hole and the lower indexing pin hole are coaxial. By providing the positioning block, when fixing the strip guiding member, there is no need to slowly align the upper indexing pin hole and the lower indexing pin hole and then insert the indexing pin. Only need to rotate the material guiding assembly to the position where it contacts the positioning post, so that the connecting member cannot rotate in the direction of the positioning post. At this time, the upper indexing pin hole is aligned with the lower indexing pin hole, and the indexing pin can be inserted to fix the strip guiding member.

[0007] Further, it further includes a connecting bottom plate. The upper surface of the connecting bottom plate fits with the lower surface of the adjusting block. The connecting bottom plate is provided with an arc connecting hole corresponding to the arc hole and a positioning connecting hole corresponding to the positioning hole. The fixing screw passes through the arc hole and the arc connecting hole to fix the adjusting block on the connecting bottom plate.

[0008] Furthermore, an arc hole is further arranged on the connecting bottom plate. The center of the arc hole is in the same position as the center of the positioning hole. The plug screw can extend out of the bottom end of the adjusting block and slide in the arc hole. The arc hole can reduce the weight of the connecting bottom plate. At the same time, it is also convenient for the plug screw to slide in the arc hole when rotating the adjusting block.

[0009] An adjusting device for a strip guiding member of a sewing machine includes a mounting assembly that can be mounted on the sewing machine, a guiding plate for mounting the strip guiding member, and the above-mentioned horizontal rotation positioning mechanism. One end of the horizontal rotation positioning mechanism is fixedly connected to the mounting assembly, and the other end is fixedly connected to the guiding plate.

[0010] Further, the mounting assembly includes a base and a mounting plate. The base can be fixedly mounted on the sewing machine tabletop. The mounting plate is mounted on the base through a knob. The setting of the knob facilitates installation and disassembly.

[0011] Further, the connecting base plate includes a horizontal section and a vertical section. The bottom surface of the horizontal section is at the same horizontal height as the bottom surface of the base. The vertical section extends vertically upward from one end of the horizontal section. The vertical section of the connecting base plate is fixedly connected to the mounting plate. The horizontal section and the bottom surface of the base jointly contact the sewing machine tabletop, jointly supporting the adjusting device of the entire strip guiding member and enhancing its stability.

[0012] Further, one end of the guiding plate is fixedly connected to the connecting member, and the other end is provided with an inlet member mounting hole for mounting the strip guiding member. The inlet member mounting hole is two parallel long circular holes. The guiding plate can mount the strip guiding member on the inlet member mounting hole through mounting screws. The long circular holes can adjust the position of the inlet connecting piece in the left - right direction, facilitating the adjustment of the distance between the strip guiding member and the sewing machine needle opening. The setting of two long holes can prevent the strip guiding member and the guiding plate from rotating.

[0013] A sewing machine includes a sewing machine functional component, an operating table, a strip guiding member, and an adjusting device for any one of the above - mentioned strip guiding members. The adjusting device for the strip guiding member is installed on the operating table. The strip guiding member is provided with screw holes. Screws are screwed into the inlet member mounting hole and the screw holes to mount the strip guiding member on the guiding plate.

[0014] The present utility model optimizes various aspects of the existing adjusting device for the strip guiding member, making the strip guiding member convenient to rotate and also convenient to fix, ensuring the sewing quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following - described drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a three - dimensional view of a horizontal rotation positioning mechanism for a strip guiding member of a sewing machine according to the present utility model.

[0017] Figure 2 It is an exploded view of a horizontal rotation positioning mechanism for a strip guiding member of a sewing machine according to the present utility model.

[0018] Figure 3 It is a three - dimensional view of an adjusting device for a strip guiding member of a sewing machine according to the present utility model.

[0019] Figure 4 It is a structural schematic diagram of an adjusting block for a horizontal rotation positioning mechanism for a strip guiding member of a sewing machine according to the present utility model.

[0020] Figure 5 Schematic diagram of the relationship between the connecting base plate and the mounting plate of an adjusting device for an inlay strip introducing part of a sewing machine according to the present utility model.

[0021] In the figure: 10, base; 11, long slot; 20, mounting plate; 30, knob; 40, introducing connecting piece; 41, guiding draw opening; 42, circular hole; 43, strip hole; 50, connecting base plate; 51, horizontal section; 52, vertical section; 53, arc hole; 54, arc connecting hole; 55, positioning connecting hole; 56, positioning screw; 57, fixing screw; 60, guiding plate; 61, long hole; 62, upper indexing pin hole; 63, upper connecting hole; 80, baffle; 90, adjusting block; 91, connecting threaded hole; 92, lower indexing pin hole; 93, setscrew; 94, arc hole; 95, lower connecting block; 96, arc hole screw; 97, connecting screw; 98, positioning post; 99, indexing pin. Specific embodiments

[0022] In this application, unless otherwise clearly defined and limited, the terms "mount", "connect", "couple", "fix", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In this application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0024] Combined with Figure 1 and 2Description will be given to a horizontal rotation positioning mechanism for a welt inserting part of a sewing machine, which includes a connecting member 60, a indexing pin 99 and a setscrew 93. The connecting member 60 has an upper indexing pin hole 62 and a connecting hole 63. The indexing pin 99 is inserted into the upper indexing pin hole 62, and the setscrew 93 is inserted into the connecting hole. The connecting member 60 can rotate horizontally around the setscrew 93. A lower indexing pin hole 92 corresponding to the upper indexing pin hole 62 is further provided below the connecting member 60, and the indexing pin 99 can be inserted into the lower indexing pin hole 92 to achieve positioning. The screw rod of the setscrew 93 includes a smooth part near the nut end and a threaded part away from the nut end. The smooth part contacts the upper connecting hole 63, and the threaded part contacts the connecting threaded hole 91. The connecting member can rotate with the smooth part of the setscrew 93 as the axis. When the connecting member rotates until the upper indexing pin hole 62 coincides with the lower indexing pin hole 92, the indexing pin 99 is inserted, and the connecting member cannot rotate. The lower indexing pin hole 92 can be provided on the sewing machine operating table or on other components relatively fixed to the operating table.

[0025] Combined with Figure 1 、 2 and 4 for description, the horizontal rotation positioning mechanism further includes an adjusting block 90. The upper surface of the adjusting block 90 fits the surface of the connecting member 60. The lower indexing pin hole 92 is provided on the adjusting block 90. The adjusting block 90 is further provided with a connecting threaded hole 91, an arc hole 94 and a positioning hole 95. The setscrew 93 passes through the connecting hole 63 and is inserted into the connecting threaded hole 91. The center positions of the arc hole 94 and the positioning hole 95 are the same. The adjusting block 90 can rotate with the positioning screw 56 of the positioning hole 95 as the axis. A fixing screw 57 for fixing the adjusting block 90 is provided in the arc hole 94. After the setscrew 93 is inserted into the connecting hole 63 and the connecting threaded hole 91, the connecting member 60 can rotate relative to the adjusting block 90. After the indexing pin 99 is inserted into the upper indexing pin hole 62 and the lower indexing pin hole 92, the connecting member 60 and the adjusting block 90 are relatively stationary. At this time, the adjusting block 90 and the connecting member 60 can be rotated together with the positioning screw 56 as the axis for adjustment. After the adjustment is completed, the fixing screw 57 is tightened, and the connecting member 60, the adjusting block 90 and the sewing machine tabletop are relatively fixed. The fixing screw 57 can pass through the arc hole 94 and be screwed into the screw hole of the operating table or into the screw hole of other components relatively fixed to the operating table.

[0026] Combined with Figure 1 、 2 and 4 for description, the adjusting block 60 is further provided with a positioning post 98 for locking the position where the upper indexing pin hole 62 and the lower indexing pin hole 92 are coaxial. When the connecting member 60 touches the positioning post 98, the positions of the upper indexing pin hole 62 and the lower indexing pin hole 92 coincide. The positioning post 98 is used to lock the position where the upper indexing pin hole 62 and the lower indexing pin hole 92 coincide.

[0027] Combined withFigure 1 and 2 Figure 1 and 2 are described. The horizontal rotation positioning mechanism further includes a connecting base plate 50. The upper surface of the connecting base plate 50 is in contact with the lower surface of the adjusting block 90. An arc-shaped connecting hole 54 corresponding to the arc hole 94 and a positioning connecting hole 55 corresponding to the positioning hole 95 are provided on the connecting base plate 50. The fixing screw 57 passes through the arc hole 94 and the arc-shaped connecting hole 54 to fix the adjusting block 90 on the connecting base plate 50.

[0028] Combined with Figure 2 Figure 2 is described. An arc-shaped hole 53 is further provided on the connecting base plate 50. The center of the arc-shaped hole 53 is in the same position as the center of the positioning hole 95. The dowel screw 93 can extend out of the bottom end of the adjusting block 90 and slide in the arc-shaped hole 53.

[0029] By adopting the above technical solutions, the horizontal rotation positioning mechanism can drive the connecting member 60 to rotate horizontally under manual pushing through the mutual cooperation of the connecting member 60, the adjusting block 90 and the connecting base plate 50. In this way, when the strip guiding member is not used, it can be easily moved without affecting other clothing sewing operations on the sewing machine table; when the strip guiding member is used, it can be easily fixed so that it can stably guide the strip. When positioning the strip guiding member through the indexing pin 99, there may be a slight deviation between the strip guiding direction of the strip guiding member and the sewing direction of the sewing machine. At this time, the adjusting block 90 can be rotated slightly to make the strip guiding direction completely consistent with the sewing direction of the sewing machine. After adjustment, tighten the positioning screw 97 and the connecting screw 96, and the connecting member 60, the adjusting block 90 and the connecting base plate 50 are relatively fixed, and the overall structure is compact and stable.

[0030] Combined with Figure 3 Figure 3 is described. An adjusting device for a strip guiding member of a sewing machine includes a mounting component that can be installed on the sewing machine, a guiding plate 70 for mounting the strip guiding member, and the above horizontal rotation positioning mechanism. One end of the horizontal rotation positioning mechanism is fixedly connected to the mounting component, and the other end is fixedly connected to the guiding plate 70.

[0031] Combined with Figure 3 Figure 3 is described. The mounting component includes a base 10 and a mounting plate 20. The base 10 can be fixedly installed on the sewing machine table. The mounting plate 20 is detachably installed on the base 10 through a knob 30. Both the base 10 and the mounting plate 20 are square. After the mounting plate 20 is installed on the base 10, the bottom surface of the mounting plate 20 is in contact with the top surface of the base 10, and the mounting plate 20 extends beyond one side edge of the base 10.

[0032] Combined with Figure 3 and 5It will be described that the connecting base plate 50 includes a horizontal section 51 and a vertical section 52. The bottom surface of the horizontal section 51 is at the same horizontal height as the bottom surface of the base 10. The vertical section 52 extends vertically upward from one end of the horizontal section 51. The vertical section 52 of the connecting base plate 50 is fixedly connected to the mounting plate 20. The vertical section 52 of the connecting base plate 50 extends upward near the base 10 and is fixedly connected to the part of the mounting 20 plate that extends beyond the side edge of the base 10.

[0033] Combined with Figure 3 It will be described that the guide plate 70 is strip-shaped. One end of the guide plate 70 is connected to the connecting member 60, and two parallel long holes 71 are provided at the other end. The strip inserting member can move in the long holes 71 to adjust the distance from the sewing machine needle hole. The two long holes 71 are provided to prevent the strip inserting member from rotating with the guide plate 70.

[0034] By adopting the above technical solution, the adjusting device of the strip inserting member can be installed on the sewing machine operating table after being connected by the mounting assembly, the horizontal rotation positioning mechanism and the guide plate 70, so as to adjust and fix the strip inserting member, improving the stability and convenience of the strip inserting member during use.

[0035] A sewing machine includes a sewing machine functional component, an operating table, a strip inserting member 40 and the adjusting device of the above strip inserting member. The adjusting device of the strip inserting member is installed on the operating table. There are screw holes on the strip inserting member 40. Screws are screwed into the inserting member mounting holes 71 and the screw holes to install the strip inserting member 40 on the guide plate 70.

[0036] The sewing machine functional component is mainly composed of some basic parts such as the machine head, the machine base, and the transmission that can realize the mechanical sewing function. The machine head is the main part of the sewing machine. It is composed of four mechanisms: the material piercing, the thread hooking, the thread taking-up, and the material feeding, and auxiliary mechanisms such as the thread winding, the material pressing, and the tooth dropping. The movements of each mechanism are reasonably coordinated and work cyclically to sew the sewing material together. The machine base is divided into two forms: the table board and the machine case. The table board of the table board type machine base plays the role of supporting the machine head and is used as a workbench during sewing operation. The table board has various styles, such as the one-drawer or multi-drawer folding type, the cabinet type, the writing desk type, etc. The machine case of the machine case type machine base plays the role of supporting and storing the machine head, making the sewing machine easy to carry and store. The transmission part of the sewing machine is composed of parts such as the machine frame, the hand crank or the motor. The machine frame is the pillar of the machine, supporting the table board and the foot pedal. During use, the operator steps on the foot pedal, which drives the rotation of the pulley through the crank, and then drives the rotation of the machine head through the belt. The hand crank or the motor is mostly directly installed on the machine head.

[0037] By adopting the above technical solution, the strip guiding member 40 for threading the strip is provided in the sewing machine. In this way, when sewing, there is no need to hold the strip by hand and step on and pull it stitch by stitch, so the working efficiency is improved, and the sewn clothing is not prone to bending or skewing, thus better maintaining its overall aesthetic appearance; the provided adjusting device can adjust the relative position between the strip guiding member 40 and the sewing machine needle opening, and reasonably adjust the strip guiding member 40 to make it more stable and convenient during use.

[0038] During the use of the sewing machine, when it is necessary to fix the strip guiding member 40 to stop rotating, rotate the connecting member 60 to the end close to the sewing machine needle opening. After the connecting member 60 contacts the positioning post 98, insert the indexing pin 99. The connecting member 60 is fixed on the adjusting block 90 and the two cannot rotate relative to each other. After the connecting member 60 is fixed, if the strip guiding member 40 is not completely aligned with the sewing machine needle opening, the adjusting block 90 can be rotated to make the strip guiding member 40 completely aligned with the sewing machine needle opening. After alignment, tighten the positioning screw 97 and the connecting screw 96, and the entire adjusting device is fixed and cannot rotate, realizing the rotation stop of the strip guiding member 40. The utility model ensures the stability of the adjusting device during the strip sewing process and improves the sewing quality.

[0039] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above embodiments. All technical solutions falling within the idea of the utility model belong to the protection scope of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the utility model should also be regarded as within the protection scope of the utility model.

Claims

1. A horizontal rotation positioning mechanism for a molding guide, characterized in that: The invention comprises a connecting member (60), an indexing pin (99) and a plug screw (93); one end of the connecting member can be directly or indirectly connected to a molding guide member; the connecting member (60) has an upper indexing pin hole (62) and a connecting hole (63); the indexing pin (99) is inserted into the upper indexing pin hole (62); the plug screw (93) is inserted into the connecting hole (63); the connecting member (60) can rotate horizontally around the plug screw (93); a lower indexing pin hole (92) corresponding to the upper indexing pin hole (62) is further provided below the connecting member (60); the indexing pin (99) can be inserted into the lower indexing pin hole (92) to achieve positioning.

2. The horizontal rotation positioning mechanism for a molding guide according to claim 1, characterized in that: It also includes an adjustment block (90), the upper surface of which is in contact with the surface of the connecting member (60), the lower indexing pin hole (92) is arranged on the adjustment block (90), the adjustment block (90) is also provided with a connecting threaded hole (91), a circular arc hole (94) and a positioning hole (95), the plug screw passes through the connecting hole (63) and is inserted into the connecting threaded hole (91), the circular arc hole (94) and the positioning hole (95) have the same center position, the adjustment block (90) can be rotated with the positioning screw (56) of the positioning hole (95) as the axis, and a fixing screw (57) is provided in the circular arc hole (94) for fixing the adjustment block (90).

3. The horizontal rotation positioning mechanism for a molding guide according to claim 2, characterized in that: The adjustment block (90) is further provided with a positioning column (98) for locking the coaxial position of the upper indexing pin hole (62) and the lower indexing pin hole (92); when the material guide assembly touches the positioning column (98), the upper indexing pin hole (62) and the lower indexing pin hole (92) are coaxial.

4. The horizontal rotation positioning mechanism for a molding guide according to claim 2, characterized in that: It also comprises a connecting base plate (50), the upper surface of the connecting base plate (50) being in contact with the lower surface of the adjusting block (90), the connecting base plate (50) being provided with an arc connecting hole (54) corresponding to the arc hole (94) and a positioning connecting hole (55) corresponding to the positioning hole (95), and the fixing screw (57) passing through the arc hole (94) and the arc connecting hole (54) to fix the adjusting block (90) to the connecting base plate (50).

5. The horizontal rotation positioning mechanism for a molding guide according to claim 4, characterized in that: An arc-shaped hole (53) is also provided on the connecting bottom plate (50), the center of the arc-shaped hole (53) being at the same position as the center of the positioning hole (95), and the plug screw (93) can extend out of the bottom end of the adjustment block (90) and slide in the arc-shaped hole (53).

6. An adjusting device for a molding guide, characterized in that: It comprises a mounting assembly that can be mounted on a sewing machine, a guide plate (70) for mounting a welt guide, and a horizontal rotation positioning mechanism as claimed in any one of claims 4 or 5, wherein one end of the horizontal rotation positioning mechanism is fixedly connected to the mounting assembly, and the other end is fixedly connected to the guide plate (70).

7. The adjusting device for a molding guide according to claim 6, characterized in that: The mounting assembly comprises a base (10) and a mounting plate (20); the base (10) can be fixedly mounted on a sewing machine table; and the mounting plate (20) is mounted on the base (10) via a knob (30).

8. The adjusting device for a molding guide according to claim 7, characterized in that: The connecting bottom plate (50) comprises a horizontal section (51) and a vertical section (52); the bottom surface of the horizontal section (51) is at the same level as the bottom surface of the base (10); the vertical section (52) is formed by vertically extending upward from one end of the horizontal section (51); and the vertical section (52) is fixedly connected to the mounting plate (20).

9. The adjusting device for a molding guide according to claim 6, characterized in that: One end of the guide plate (70) is fixedly connected to the connecting piece (60), and the other end is provided with an introduction piece mounting hole (71) for mounting a fillet introduction piece. The introduction piece mounting holes (71) are two parallel oblong holes. The guide plate (70) can be used to mount the fillet introduction piece on the introduction piece mounting holes (71) by means of mounting screws.

10. A sewing machine, characterized in that: The invention comprises a sewing machine functional component, an operating table, a welt guide piece (40) and an adjusting device for the welt guide piece according to claim 6, wherein the adjusting device for the welt guide piece is mounted on the operating table, and a screw hole is provided on the welt guide piece (40). The screw is screwed into the guide piece mounting hole (71) and the screw hole to mount the welt guide piece (40) on the guide plate (70).

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